2 LINUX ALLOCATED DEVICES
4 Maintained by Torben Mathiasen <device@lanana.org>
6 Last revised: 04 August 2004
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released.
29 This document is in the public domain. The author requests, however,
30 that semantically altered versions are not distributed without
31 permission of the author, assuming the author can be contacted without
32 an unreasonable effort.
34 In particular, please don't sent patches for this list to Linus, at
35 least not without contacting me first.
37 I do not have any information about these devices beyond what appears
38 on this list. Any such information requests will be deleted without
42 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
44 THE DEVICE REGISTRY IS OFFICIALLY FROZEN FOR LINUS TORVALDS' KERNEL
45 TREE. At Linus' request, no more allocations will be made official
46 for Linus' kernel tree; the 3 June 2001 version of this list is the
47 official final version of this registry. At Alan Cox' request,
48 however, the registry will continue to be maintained for the -ac
49 series of kernels, and registrations will be accepted.
51 To have a major number allocated, or a minor number in situations
52 where that applies (e.g. busmice), please contact me with the
53 appropriate device information. Also, if you have additional
54 information regarding any of the devices listed below, or if I have
55 made a mistake, I would greatly appreciate a note.
57 I do, however, make a few requests about the nature of your report.
58 This is necessary for me to be able to keep this list up to date and
59 correct in a timely manner. First of all, *please* send it to the
60 correct address... <device@lanana.org>. I receive hundreds of email
61 messages a day, so mail sent to other addresses may very well get lost
62 in the avalanche. Please put in a descriptive subject, so I can find
63 your mail again should I need to. Too many people send me email
64 saying just "device number request" in the subject.
66 Second, please include a description of the device *in the same format
67 as this list*. The reason for this is that it is the only way I have
68 found to ensure I have all the requisite information to publish your
69 device and avoid conflicts.
71 Third, please don't assume that the distributed version of the list is
72 up to date. Due to the number of registrations I have to maintain it
73 in "batch mode", so there is likely additional registrations that
74 haven't been listed yet.
76 Finally, sometimes I have to play "namespace police." Please don't be
77 offended. I often get submissions for /dev names that would be bound
78 to cause conflicts down the road. I am trying to avoid getting in a
79 situation where we would have to suffer an incompatible forward
80 change. Therefore, please consult with me *before* you make your
81 device names and numbers in any way public, at least to the point
82 where it would be at all difficult to get them changed.
84 Your cooperation is appreciated.
87 0 Unnamed devices (e.g. non-device mounts)
88 0 = reserved as null device number
89 See block major 144, 145, 146 for expansion areas.
92 1 = /dev/mem Physical memory access
93 2 = /dev/kmem Kernel virtual memory access
94 3 = /dev/null Null device
95 4 = /dev/port I/O port access
96 5 = /dev/zero Null byte source
97 6 = /dev/core OBSOLETE - replaced by /proc/kcore
98 7 = /dev/full Returns ENOSPC on write
99 8 = /dev/random Nondeterministic random number gen.
100 9 = /dev/urandom Faster, less secure random number gen.
101 10 = /dev/aio Asyncronous I/O notification interface
102 11 = /dev/kmsg Writes to this come out as printk's
104 0 = /dev/ram0 First RAM disk
105 1 = /dev/ram1 Second RAM disk
107 250 = /dev/initrd Initial RAM disk {2.6}
109 Older kernels had /dev/ramdisk (1, 1) here.
110 /dev/initrd refers to a RAM disk which was preloaded
111 by the boot loader; newer kernels use /dev/ram0 for
114 2 char Pseudo-TTY masters
115 0 = /dev/ptyp0 First PTY master
116 1 = /dev/ptyp1 Second PTY master
118 255 = /dev/ptyef 256th PTY master
120 Pseudo-tty's are named as follows:
121 * Masters are "pty", slaves are "tty";
122 * the fourth letter is one of pqrstuvwxyzabcde indicating
123 the 1st through 16th series of 16 pseudo-ttys each, and
124 * the fifth letter is one of 0123456789abcdef indicating
125 the position within the series.
127 These are the old-style (BSD) PTY devices; Unix98
128 devices are on major 128 and above and use the PTY
129 master multiplex (/dev/ptmx) to acquire a PTY on
133 0 = /dev/fd0 Controller 0, drive 0, autodetect
134 1 = /dev/fd1 Controller 0, drive 1, autodetect
135 2 = /dev/fd2 Controller 0, drive 2, autodetect
136 3 = /dev/fd3 Controller 0, drive 3, autodetect
137 128 = /dev/fd4 Controller 1, drive 0, autodetect
138 129 = /dev/fd5 Controller 1, drive 1, autodetect
139 130 = /dev/fd6 Controller 1, drive 2, autodetect
140 131 = /dev/fd7 Controller 1, drive 3, autodetect
142 To specify format, add to the autodetect device number:
143 0 = /dev/fd? Autodetect format
144 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
145 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
146 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
147 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
148 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
149 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
150 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
151 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
152 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
153 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
154 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
156 12 = /dev/fd?u360 3.5" 360K Double Density(2)
157 16 = /dev/fd?u720 3.5" 720K Double Density(1)
158 120 = /dev/fd?u800 3.5" 800K Double Density(2)
159 52 = /dev/fd?u820 3.5" 820K Double Density
160 68 = /dev/fd?u830 3.5" 830K Double Density
161 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
162 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
163 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
164 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
165 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
166 60 = /dev/fd?u1722 3.5" 1722K High Density
167 76 = /dev/fd?u1743 3.5" 1743K High Density
168 96 = /dev/fd?u1760 3.5" 1760K High Density
169 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
170 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
171 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
172 104 = /dev/fd?u3200 3.5" 3200K Extra Density
173 108 = /dev/fd?u3520 3.5" 3520K Extra Density
174 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
176 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
178 (1) Autodetectable format
179 (2) Autodetectable format in a Double Density (720K) drive only
180 (3) Autodetectable format in a High Density (1440K) drive only
182 NOTE: The letter in the device name (d, q, h or u)
183 signifies the type of drive: 5.25" Double Density (d),
184 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
185 (any model, u). The use of the capital letters D, H
186 and E for the 3.5" models have been deprecated, since
187 the drive type is insignificant for these devices.
189 3 char Pseudo-TTY slaves
190 0 = /dev/ttyp0 First PTY slave
191 1 = /dev/ttyp1 Second PTY slave
193 255 = /dev/ttyef 256th PTY slave
195 These are the old-style (BSD) PTY devices; Unix98
196 devices are on major 136 and above.
198 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
199 0 = /dev/hda Master: whole disk (or CD-ROM)
200 64 = /dev/hdb Slave: whole disk (or CD-ROM)
202 For partitions, add to the whole disk device number:
203 0 = /dev/hd? Whole disk
204 1 = /dev/hd?1 First partition
205 2 = /dev/hd?2 Second partition
207 63 = /dev/hd?63 63rd partition
209 For Linux/i386, partitions 1-4 are the primary
210 partitions, and 5 and above are logical partitions.
211 Other versions of Linux use partitioning schemes
212 appropriate to their respective architectures.
215 0 = /dev/tty0 Current virtual console
217 1 = /dev/tty1 First virtual console
219 63 = /dev/tty63 63rd virtual console
220 64 = /dev/ttyS0 First UART serial port
222 255 = /dev/ttyS191 192nd UART serial port
224 UART serial ports refer to 8250/16450/16550 series devices.
226 Older versions of the Linux kernel used this major
227 number for BSD PTY devices. As of Linux 2.1.115, this
228 is no longer supported. Use major numbers 2 and 3.
230 4 block Aliases for dynamically allocated major devices to be used
231 when its not possible to create the real device nodes
232 because the root filesystem is mounted read-only.
236 5 char Alternate TTY devices
237 0 = /dev/tty Current TTY device
238 1 = /dev/console System console
239 2 = /dev/ptmx PTY master multiplex
240 64 = /dev/cua0 Callout device for ttyS0
242 255 = /dev/cua191 Callout device for ttyS191
244 (5,1) is /dev/console starting with Linux 2.1.71. See
245 the section on terminal devices for more information
248 6 char Parallel printer devices
249 0 = /dev/lp0 Parallel printer on parport0
250 1 = /dev/lp1 Parallel printer on parport1
253 Current Linux kernels no longer have a fixed mapping
254 between parallel ports and I/O addresses. Instead,
255 they are redirected through the parport multiplex layer.
257 7 char Virtual console capture devices
258 0 = /dev/vcs Current vc text contents
259 1 = /dev/vcs1 tty1 text contents
261 63 = /dev/vcs63 tty63 text contents
262 128 = /dev/vcsa Current vc text/attribute contents
263 129 = /dev/vcsa1 tty1 text/attribute contents
265 191 = /dev/vcsa63 tty63 text/attribute contents
267 NOTE: These devices permit both read and write access.
269 7 block Loopback devices
270 0 = /dev/loop0 First loopback device
271 1 = /dev/loop1 Second loopback device
274 The loopback devices are used to mount filesystems not
275 associated with block devices. The binding to the
276 loopback devices is handled by mount(8) or losetup(8).
278 8 block SCSI disk devices (0-15)
279 0 = /dev/sda First SCSI disk whole disk
280 16 = /dev/sdb Second SCSI disk whole disk
281 32 = /dev/sdc Third SCSI disk whole disk
283 240 = /dev/sdp Sixteenth SCSI disk whole disk
285 Partitions are handled in the same way as for IDE
286 disks (see major number 3) except that the limit on
289 9 char SCSI tape devices
290 0 = /dev/st0 First SCSI tape, mode 0
291 1 = /dev/st1 Second SCSI tape, mode 0
293 32 = /dev/st0l First SCSI tape, mode 1
294 33 = /dev/st1l Second SCSI tape, mode 1
296 64 = /dev/st0m First SCSI tape, mode 2
297 65 = /dev/st1m Second SCSI tape, mode 2
299 96 = /dev/st0a First SCSI tape, mode 3
300 97 = /dev/st1a Second SCSI tape, mode 3
302 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
303 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
305 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
306 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
308 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
309 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
311 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
312 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
315 "No rewind" refers to the omission of the default
316 automatic rewind on device close. The MTREW or MTOFFL
317 ioctl()'s can be used to rewind the tape regardless of
318 the device used to access it.
320 9 block Metadisk (RAID) devices
321 0 = /dev/md0 First metadisk group
322 1 = /dev/md1 Second metadisk group
325 The metadisk driver is used to span a
326 filesystem across multiple physical disks.
328 10 char Non-serial mice, misc features
329 0 = /dev/logibm Logitech bus mouse
330 1 = /dev/psaux PS/2-style mouse port
331 2 = /dev/inportbm Microsoft Inport bus mouse
332 3 = /dev/atibm ATI XL bus mouse
334 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
335 5 = /dev/atarimouse Atari mouse
336 6 = /dev/sunmouse Sun mouse
337 7 = /dev/amigamouse1 Second Amiga mouse
338 8 = /dev/smouse Simple serial mouse driver
339 9 = /dev/pc110pad IBM PC-110 digitizer pad
340 10 = /dev/adbmouse Apple Desktop Bus mouse
341 11 = /dev/vrtpanel Vr41xx embedded touch panel
342 13 = /dev/vpcmouse Connectix Virtual PC Mouse
343 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
344 15 = /dev/touchscreen/mk712 MK712 touchscreen
345 128 = /dev/beep Fancy beep device
346 129 = /dev/modreq Kernel module load request {2.6}
347 130 = /dev/watchdog Watchdog timer port
348 131 = /dev/temperature Machine internal temperature
349 132 = /dev/hwtrap Hardware fault trap
350 133 = /dev/exttrp External device trap
351 134 = /dev/apm_bios Advanced Power Management BIOS
352 135 = /dev/rtc Real Time Clock
353 139 = /dev/openprom SPARC OpenBoot PROM
354 140 = /dev/relay8 Berkshire Products Octal relay card
355 141 = /dev/relay16 Berkshire Products ISO-16 relay card
356 142 = /dev/msr x86 model-specific registers {2.6}
357 143 = /dev/pciconf PCI configuration space
358 144 = /dev/nvram Non-volatile configuration RAM
359 145 = /dev/hfmodem Soundcard shortwave modem control {2.6}
360 146 = /dev/graphics Linux/SGI graphics device
361 147 = /dev/opengl Linux/SGI OpenGL pipe
362 148 = /dev/gfx Linux/SGI graphics effects device
363 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
364 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
365 151 = /dev/led Front panel LEDs
366 152 = /dev/kpoll Kernel Poll Driver
367 153 = /dev/mergemem Memory merge device
368 154 = /dev/pmu Macintosh PowerBook power manager
369 155 = /dev/isictl MultiTech ISICom serial control
370 156 = /dev/lcd Front panel LCD display
371 157 = /dev/ac Applicom Intl Profibus card
372 158 = /dev/nwbutton Netwinder external button
373 159 = /dev/nwdebug Netwinder debug interface
374 160 = /dev/nwflash Netwinder flash memory
375 161 = /dev/userdma User-space DMA access
376 162 = /dev/smbus System Management Bus
377 163 = /dev/lik Logitech Internet Keyboard
378 164 = /dev/ipmo Intel Intelligent Platform Management
379 165 = /dev/vmmon VMWare virtual machine monitor
380 166 = /dev/i2o/ctl I2O configuration manager
381 167 = /dev/specialix_sxctl Specialix serial control
382 168 = /dev/tcldrv Technology Concepts serial control
383 169 = /dev/specialix_rioctl Specialix RIO serial control
384 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
385 171 = /dev/srripc QNX4 API IPC manager
386 172 = /dev/usemaclone Semaphore clone device
387 173 = /dev/ipmikcs Intelligent Platform Management
388 174 = /dev/uctrl SPARCbook 3 microcontroller
389 175 = /dev/agpgart AGP Graphics Address Remapping Table
390 176 = /dev/gtrsc Gorgy Timing radio clock
391 177 = /dev/cbm Serial CBM bus
392 178 = /dev/jsflash JavaStation OS flash SIMM
393 179 = /dev/xsvc High-speed shared-mem/semaphore service
394 180 = /dev/vrbuttons Vr41xx button input device
395 181 = /dev/toshiba Toshiba laptop SMM support
396 182 = /dev/perfctr Performance-monitoring counters
397 183 = /dev/hwrng Generic random number generator
398 184 = /dev/cpu/microcode CPU microcode update interface
399 186 = /dev/atomicps Atomic shapshot of process state data
400 187 = /dev/irnet IrNET device
401 188 = /dev/smbusbios SMBus BIOS
402 189 = /dev/ussp_ctl User space serial port control
403 190 = /dev/crash Mission Critical Linux crash dump facility
404 191 = /dev/pcl181 <information missing>
405 192 = /dev/nas_xbus NAS xbus LCD/buttons access
406 193 = /dev/d7s SPARC 7-segment display
407 194 = /dev/zkshim Zero-Knowledge network shim control
408 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
409 198 = /dev/sexec Signed executable interface
410 199 = /dev/scanners/cuecat :CueCat barcode scanner
411 200 = /dev/net/tun TAP/TUN network device
412 201 = /dev/button/gulpb Transmeta GULP-B buttons
413 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
414 204 = /dev/video/em8300 EM8300 DVD decoder control
415 205 = /dev/video/em8300_mv EM8300 DVD decoder video
416 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
417 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
418 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
419 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
420 210 = /dev/impi/bt IMPI coprocessor block transfer
421 211 = /dev/impi/smic IMPI coprocessor stream interface
422 212 = /dev/watchdogs/0 First watchdog device
423 213 = /dev/watchdogs/1 Second watchdog device
424 214 = /dev/watchdogs/2 Third watchdog device
425 215 = /dev/watchdogs/3 Fourth watchdog device
426 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
427 217 = /dev/ni/natmotn National Instruments Motion
428 218 = /dev/kchuid Inter-process chuid control
429 219 = /dev/modems/mwave MWave modem firmware upload
430 220 = /dev/mptctl Message passing technology (MPT) control
431 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
432 222 = /dev/mvista/hasi Montavista PICMG high availability
433 223 = /dev/input/uinput User level driver support for input
434 224 = /dev/tpm TCPA TPM driver
435 225 = /dev/pps Pulse Per Second driver
436 226 = /dev/systrace Systrace device
437 227 = /dev/mcelog X86_64 Machine Check Exception driver
438 228 = /dev/hpet HPET driver
439 240-254 Reserved for local use
440 255 Reserved for MISC_DYNAMIC_MINOR
442 11 char Raw keyboard device (Linux/SPARC only)
443 0 = /dev/kbd Raw keyboard device
445 11 char Serial Mux device (Linux/PA-RISC only)
446 0 = /dev/ttyB0 First mux port
447 1 = /dev/ttyB1 Second mux port
450 11 block SCSI CD-ROM devices
451 0 = /dev/scd0 First SCSI CD-ROM
452 1 = /dev/scd1 Second SCSI CD-ROM
455 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
458 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
459 3 = /dev/tpqic11 QIC-11, rewind-on-close
460 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
461 5 = /dev/tpqic24 QIC-24, rewind-on-close
462 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
463 7 = /dev/tpqic120 QIC-120, rewind-on-close
464 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
465 9 = /dev/tpqic150 QIC-150, rewind-on-close
467 The device names specified are proposed -- if there
468 are "standard" names for these devices, please let me know.
470 12 block MSCDEX CD-ROM callback support {2.6}
471 0 = /dev/dos_cd0 First MSCDEX CD-ROM
472 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
476 0 = /dev/input/js0 First joystick
477 1 = /dev/input/js1 Second joystick
479 32 = /dev/input/mouse0 First mouse
480 33 = /dev/input/mouse1 Second mouse
482 63 = /dev/input/mice Unified mouse
483 64 = /dev/input/event0 First event queue
484 65 = /dev/input/event1 Second event queue
487 Each device type has 5 bits (32 minors).
489 13 block 8-bit MFM/RLL/IDE controller
490 0 = /dev/xda First XT disk whole disk
491 64 = /dev/xdb Second XT disk whole disk
493 Partitions are handled in the same way as IDE disks
494 (see major number 3).
496 14 char Open Sound System (OSS)
497 0 = /dev/mixer Mixer control
498 1 = /dev/sequencer Audio sequencer
499 2 = /dev/midi00 First MIDI port
500 3 = /dev/dsp Digital audio
501 4 = /dev/audio Sun-compatible digital audio
502 6 = /dev/sndstat Sound card status information {2.6}
503 7 = /dev/audioctl SPARC audio control device
504 8 = /dev/sequencer2 Sequencer -- alternate device
505 16 = /dev/mixer1 Second soundcard mixer control
506 17 = /dev/patmgr0 Sequencer patch manager
507 18 = /dev/midi01 Second MIDI port
508 19 = /dev/dsp1 Second soundcard digital audio
509 20 = /dev/audio1 Second soundcard Sun digital audio
510 33 = /dev/patmgr1 Sequencer patch manager
511 34 = /dev/midi02 Third MIDI port
512 50 = /dev/midi03 Fourth MIDI port
513 14 block BIOS harddrive callback support {2.6}
514 0 = /dev/dos_hda First BIOS harddrive whole disk
515 64 = /dev/dos_hdb Second BIOS harddrive whole disk
516 128 = /dev/dos_hdc Third BIOS harddrive whole disk
517 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
519 Partitions are handled in the same way as IDE disks
520 (see major number 3).
523 0 = /dev/js0 First analog joystick
524 1 = /dev/js1 Second analog joystick
526 128 = /dev/djs0 First digital joystick
527 129 = /dev/djs1 Second digital joystick
529 15 block Sony CDU-31A/CDU-33A CD-ROM
530 0 = /dev/sonycd Sony CDU-31a CD-ROM
532 16 char Non-SCSI scanners
533 0 = /dev/gs4500 Genius 4500 handheld scanner
534 16 block GoldStar CD-ROM
535 0 = /dev/gscd GoldStar CD-ROM
537 17 char Chase serial card
538 0 = /dev/ttyH0 First Chase port
539 1 = /dev/ttyH1 Second Chase port
541 17 block Optics Storage CD-ROM
542 0 = /dev/optcd Optics Storage CD-ROM
544 18 char Chase serial card - alternate devices
545 0 = /dev/cuh0 Callout device for ttyH0
546 1 = /dev/cuh1 Callout device for ttyH1
548 18 block Sanyo CD-ROM
549 0 = /dev/sjcd Sanyo CD-ROM
551 19 char Cyclades serial card
552 0 = /dev/ttyC0 First Cyclades port
554 31 = /dev/ttyC31 32nd Cyclades port
555 19 block "Double" compressed disk
556 0 = /dev/double0 First compressed disk
558 7 = /dev/double7 Eighth compressed disk
559 128 = /dev/cdouble0 Mirror of first compressed disk
561 135 = /dev/cdouble7 Mirror of eighth compressed disk
563 See the Double documentation for the meaning of the
566 20 char Cyclades serial card - alternate devices
567 0 = /dev/cub0 Callout device for ttyC0
569 31 = /dev/cub31 Callout device for ttyC31
570 20 block Hitachi CD-ROM (under development)
571 0 = /dev/hitcd Hitachi CD-ROM
573 21 char Generic SCSI access
574 0 = /dev/sg0 First generic SCSI device
575 1 = /dev/sg1 Second generic SCSI device
578 Most distributions name these /dev/sga, /dev/sgb...;
579 this sets an unnecessary limit of 26 SCSI devices in
580 the system and is counter to standard Linux
581 device-naming practice.
583 21 block Acorn MFM hard drive interface
584 0 = /dev/mfma First MFM drive whole disk
585 64 = /dev/mfmb Second MFM drive whole disk
587 This device is used on the ARM-based Acorn RiscPC.
588 Partitions are handled the same way as for IDE disks
589 (see major number 3).
591 22 char Digiboard serial card
592 0 = /dev/ttyD0 First Digiboard port
593 1 = /dev/ttyD1 Second Digiboard port
595 22 block Second IDE hard disk/CD-ROM interface
596 0 = /dev/hdc Master: whole disk (or CD-ROM)
597 64 = /dev/hdd Slave: whole disk (or CD-ROM)
599 Partitions are handled the same way as for the first
600 interface (see major number 3).
602 23 char Digiboard serial card - alternate devices
603 0 = /dev/cud0 Callout device for ttyD0
604 1 = /dev/cud1 Callout device for ttyD1
606 23 block Mitsumi proprietary CD-ROM
607 0 = /dev/mcd Mitsumi CD-ROM
609 24 char Stallion serial card
610 0 = /dev/ttyE0 Stallion port 0 card 0
611 1 = /dev/ttyE1 Stallion port 1 card 0
613 64 = /dev/ttyE64 Stallion port 0 card 1
614 65 = /dev/ttyE65 Stallion port 1 card 1
616 128 = /dev/ttyE128 Stallion port 0 card 2
617 129 = /dev/ttyE129 Stallion port 1 card 2
619 192 = /dev/ttyE192 Stallion port 0 card 3
620 193 = /dev/ttyE193 Stallion port 1 card 3
622 24 block Sony CDU-535 CD-ROM
623 0 = /dev/cdu535 Sony CDU-535 CD-ROM
625 25 char Stallion serial card - alternate devices
626 0 = /dev/cue0 Callout device for ttyE0
627 1 = /dev/cue1 Callout device for ttyE1
629 64 = /dev/cue64 Callout device for ttyE64
630 65 = /dev/cue65 Callout device for ttyE65
632 128 = /dev/cue128 Callout device for ttyE128
633 129 = /dev/cue129 Callout device for ttyE129
635 192 = /dev/cue192 Callout device for ttyE192
636 193 = /dev/cue193 Callout device for ttyE193
638 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
639 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
640 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
641 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
642 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
644 26 char Quanta WinVision frame grabber {2.6}
645 0 = /dev/wvisfgrab Quanta WinVision frame grabber
646 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
647 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
648 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
649 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
650 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
653 0 = /dev/qft0 Unit 0, rewind-on-close
654 1 = /dev/qft1 Unit 1, rewind-on-close
655 2 = /dev/qft2 Unit 2, rewind-on-close
656 3 = /dev/qft3 Unit 3, rewind-on-close
657 4 = /dev/nqft0 Unit 0, no rewind-on-close
658 5 = /dev/nqft1 Unit 1, no rewind-on-close
659 6 = /dev/nqft2 Unit 2, no rewind-on-close
660 7 = /dev/nqft3 Unit 3, no rewind-on-close
661 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
662 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
663 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
664 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
665 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
666 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
667 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
668 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
669 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
670 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
671 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
672 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
673 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
674 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
675 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
676 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
677 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
678 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
679 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
680 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
681 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
683 28 char Stallion serial card - card programming
684 0 = /dev/staliomem0 First Stallion card I/O memory
685 1 = /dev/staliomem1 Second Stallion card I/O memory
686 2 = /dev/staliomem2 Third Stallion card I/O memory
687 3 = /dev/staliomem3 Fourth Stallion card I/O memory
688 28 char Atari SLM ACSI laser printer (68k/Atari)
689 0 = /dev/slm0 First SLM laser printer
690 1 = /dev/slm1 Second SLM laser printer
692 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
693 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
694 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
695 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
696 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
697 28 block ACSI disk (68k/Atari)
698 0 = /dev/ada First ACSI disk whole disk
699 16 = /dev/adb Second ACSI disk whole disk
700 32 = /dev/adc Third ACSI disk whole disk
702 240 = /dev/adp 16th ACSI disk whole disk
704 Partitions are handled in the same way as for IDE
705 disks (see major number 3) except that the limit on
706 partitions is 15, like SCSI.
708 29 char Universal frame buffer
709 0 = /dev/fb0 First frame buffer
710 1 = /dev/fb1 Second frame buffer
712 31 = /dev/fb31 32nd frame buffer
714 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
715 0 = /dev/aztcd Aztech CD-ROM
717 30 char iBCS-2 compatibility devices
718 0 = /dev/socksys Socket access
719 1 = /dev/spx SVR3 local X interface
720 32 = /dev/inet/ip Network access
731 Additionally, iBCS-2 requires the following links:
733 /dev/ip -> /dev/inet/ip
734 /dev/icmp -> /dev/inet/icmp
735 /dev/ggp -> /dev/inet/ggp
736 /dev/ipip -> /dev/inet/ipip
737 /dev/tcp -> /dev/inet/tcp
738 /dev/egp -> /dev/inet/egp
739 /dev/pup -> /dev/inet/pup
740 /dev/udp -> /dev/inet/udp
741 /dev/idp -> /dev/inet/idp
742 /dev/rawip -> /dev/inet/rawip
743 /dev/inet/arp -> /dev/inet/udp
744 /dev/inet/rip -> /dev/inet/udp
745 /dev/nfsd -> /dev/socksys
746 /dev/X0R -> /dev/null (? apparently not required ?)
748 30 block Philips LMS CM-205 CD-ROM
749 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
751 /dev/lmscd is an older name for this device. This
752 driver does not work with the CM-205MS CD-ROM.
755 0 = /dev/mpu401data MPU-401 data port
756 1 = /dev/mpu401stat MPU-401 status port
757 31 block ROM/flash memory card
758 0 = /dev/rom0 First ROM card (rw)
760 7 = /dev/rom7 Eighth ROM card (rw)
761 8 = /dev/rrom0 First ROM card (ro)
763 15 = /dev/rrom7 Eighth ROM card (ro)
764 16 = /dev/flash0 First flash memory card (rw)
766 23 = /dev/flash7 Eighth flash memory card (rw)
767 24 = /dev/rflash0 First flash memory card (ro)
769 31 = /dev/rflash7 Eighth flash memory card (ro)
771 The read-write (rw) devices support back-caching
772 written data in RAM, as well as writing to flash RAM
773 devices. The read-only devices (ro) support reading
776 32 char Specialix serial card
777 0 = /dev/ttyX0 First Specialix port
778 1 = /dev/ttyX1 Second Specialix port
780 32 block Philips LMS CM-206 CD-ROM
781 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
783 33 char Specialix serial card - alternate devices
784 0 = /dev/cux0 Callout device for ttyX0
785 1 = /dev/cux1 Callout device for ttyX1
787 33 block Third IDE hard disk/CD-ROM interface
788 0 = /dev/hde Master: whole disk (or CD-ROM)
789 64 = /dev/hdf Slave: whole disk (or CD-ROM)
791 Partitions are handled the same way as for the first
792 interface (see major number 3).
794 34 char Z8530 HDLC driver
795 0 = /dev/scc0 First Z8530, first port
796 1 = /dev/scc1 First Z8530, second port
797 2 = /dev/scc2 Second Z8530, first port
798 3 = /dev/scc3 Second Z8530, second port
801 In a previous version these devices were named
802 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
805 34 block Fourth IDE hard disk/CD-ROM interface
806 0 = /dev/hdg Master: whole disk (or CD-ROM)
807 64 = /dev/hdh Slave: whole disk (or CD-ROM)
809 Partitions are handled the same way as for the first
810 interface (see major number 3).
812 35 char tclmidi MIDI driver
813 0 = /dev/midi0 First MIDI port, kernel timed
814 1 = /dev/midi1 Second MIDI port, kernel timed
815 2 = /dev/midi2 Third MIDI port, kernel timed
816 3 = /dev/midi3 Fourth MIDI port, kernel timed
817 64 = /dev/rmidi0 First MIDI port, untimed
818 65 = /dev/rmidi1 Second MIDI port, untimed
819 66 = /dev/rmidi2 Third MIDI port, untimed
820 67 = /dev/rmidi3 Fourth MIDI port, untimed
821 128 = /dev/smpte0 First MIDI port, SMPTE timed
822 129 = /dev/smpte1 Second MIDI port, SMPTE timed
823 130 = /dev/smpte2 Third MIDI port, SMPTE timed
824 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
825 35 block Slow memory ramdisk
826 0 = /dev/slram Slow memory ramdisk
828 36 char Netlink support
829 0 = /dev/route Routing, device updates, kernel to user
830 1 = /dev/skip enSKIP security cache control
831 3 = /dev/fwmonitor Firewall packet copies
832 16 = /dev/tap0 First Ethertap device
834 31 = /dev/tap15 16th Ethertap device
835 36 block MCA ESDI hard disk
836 0 = /dev/eda First ESDI disk whole disk
837 64 = /dev/edb Second ESDI disk whole disk
840 Partitions are handled in the same way as IDE disks
841 (see major number 3).
844 0 = /dev/ht0 First IDE tape
845 1 = /dev/ht1 Second IDE tape
847 128 = /dev/nht0 First IDE tape, no rewind-on-close
848 129 = /dev/nht1 Second IDE tape, no rewind-on-close
851 Currently, only one IDE tape drive is supported.
853 37 block Zorro II ramdisk
854 0 = /dev/z2ram Zorro II ramdisk
856 38 char Myricom PCI Myrinet board
857 0 = /dev/mlanai0 First Myrinet board
858 1 = /dev/mlanai1 Second Myrinet board
861 This device is used for status query, board control
862 and "user level packet I/O." This board is also
863 accessible as a standard networking "eth" device.
865 38 block Reserved for Linux/AP+
867 39 char ML-16P experimental I/O board
868 0 = /dev/ml16pa-a0 First card, first analog channel
869 1 = /dev/ml16pa-a1 First card, second analog channel
871 15 = /dev/ml16pa-a15 First card, 16th analog channel
872 16 = /dev/ml16pa-d First card, digital lines
873 17 = /dev/ml16pa-c0 First card, first counter/timer
874 18 = /dev/ml16pa-c1 First card, second counter/timer
875 19 = /dev/ml16pa-c2 First card, third counter/timer
876 32 = /dev/ml16pb-a0 Second card, first analog channel
877 33 = /dev/ml16pb-a1 Second card, second analog channel
879 47 = /dev/ml16pb-a15 Second card, 16th analog channel
880 48 = /dev/ml16pb-d Second card, digital lines
881 49 = /dev/ml16pb-c0 Second card, first counter/timer
882 50 = /dev/ml16pb-c1 Second card, second counter/timer
883 51 = /dev/ml16pb-c2 Second card, third counter/timer
885 39 block Reserved for Linux/AP+
887 40 char Matrox Meteor frame grabber {2.6}
888 0 = /dev/mmetfgrab Matrox Meteor frame grabber
889 40 block Syquest EZ135 parallel port removable drive
890 0 = /dev/eza Parallel EZ135 drive, whole disk
892 This device is obsolete and will be removed in a
893 future version of Linux. It has been replaced with
894 the parallel port IDE disk driver at major number 45.
895 Partitions are handled in the same way as IDE disks
896 (see major number 3).
898 41 char Yet Another Micro Monitor
899 0 = /dev/yamm Yet Another Micro Monitor
900 41 block MicroSolutions BackPack parallel port CD-ROM
901 0 = /dev/bpcd BackPack CD-ROM
903 This device is obsolete and will be removed in a
904 future version of Linux. It has been replaced with
905 the parallel port ATAPI CD-ROM driver at major number 46.
907 42 char Demo/sample use
908 42 block Demo/sample use
910 This number is intended for use in sample code, as
911 well as a general "example" device number. It
912 should never be used for a device driver that is being
913 distributed; either obtain an official number or use
914 the local/experimental range. The sudden addition or
915 removal of a driver with this number should not cause
916 ill effects to the system (bugs excepted.)
918 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
919 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
921 43 char isdn4linux virtual modem
922 0 = /dev/ttyI0 First virtual modem
924 63 = /dev/ttyI63 64th virtual modem
925 43 block Network block devices
926 0 = /dev/nb0 First network block device
927 1 = /dev/nb1 Second network block device
930 Network Block Device is somehow similar to loopback
931 devices: If you read from it, it sends packet across
932 network asking server for data. If you write to it, it
933 sends packet telling server to write. It could be used
934 to mounting filesystems over the net, swapping over
935 the net, implementing block device in userland etc.
937 44 char isdn4linux virtual modem - alternate devices
938 0 = /dev/cui0 Callout device for ttyI0
940 63 = /dev/cui63 Callout device for ttyI63
941 44 block Flash Translation Layer (FTL) filesystems
942 0 = /dev/ftla FTL on first Memory Technology Device
943 16 = /dev/ftlb FTL on second Memory Technology Device
944 32 = /dev/ftlc FTL on third Memory Technology Device
946 240 = /dev/ftlp FTL on 16th Memory Technology Device
948 Partitions are handled in the same way as for IDE
949 disks (see major number 3) expect that the partition
950 limit is 15 rather than 63 per disk (same as SCSI.)
952 45 char isdn4linux ISDN BRI driver
953 0 = /dev/isdn0 First virtual B channel raw data
955 63 = /dev/isdn63 64th virtual B channel raw data
956 64 = /dev/isdnctrl0 First channel control/debug
958 127 = /dev/isdnctrl63 64th channel control/debug
960 128 = /dev/ippp0 First SyncPPP device
962 191 = /dev/ippp63 64th SyncPPP device
964 255 = /dev/isdninfo ISDN monitor interface
965 45 block Parallel port IDE disk devices
966 0 = /dev/pda First parallel port IDE disk
967 16 = /dev/pdb Second parallel port IDE disk
968 32 = /dev/pdc Third parallel port IDE disk
969 48 = /dev/pdd Fourth parallel port IDE disk
971 Partitions are handled in the same way as for IDE
972 disks (see major number 3) except that the partition
973 limit is 15 rather than 63 per disk.
975 46 char Comtrol Rocketport serial card
976 0 = /dev/ttyR0 First Rocketport port
977 1 = /dev/ttyR1 Second Rocketport port
979 46 block Parallel port ATAPI CD-ROM devices
980 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
981 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
982 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
983 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
985 47 char Comtrol Rocketport serial card - alternate devices
986 0 = /dev/cur0 Callout device for ttyR0
987 1 = /dev/cur1 Callout device for ttyR1
989 47 block Parallel port ATAPI disk devices
990 0 = /dev/pf0 First parallel port ATAPI disk
991 1 = /dev/pf1 Second parallel port ATAPI disk
992 2 = /dev/pf2 Third parallel port ATAPI disk
993 3 = /dev/pf3 Fourth parallel port ATAPI disk
995 This driver is intended for floppy disks and similar
996 devices and hence does not support partitioning.
998 48 char SDL RISCom serial card
999 0 = /dev/ttyL0 First RISCom port
1000 1 = /dev/ttyL1 Second RISCom port
1002 48 block Mylex DAC960 PCI RAID controller; first controller
1003 0 = /dev/rd/c0d0 First disk, whole disk
1004 8 = /dev/rd/c0d1 Second disk, whole disk
1006 248 = /dev/rd/c0d31 32nd disk, whole disk
1009 0 = /dev/rd/c?d? Whole disk
1010 1 = /dev/rd/c?d?p1 First partition
1012 7 = /dev/rd/c?d?p7 Seventh partition
1014 49 char SDL RISCom serial card - alternate devices
1015 0 = /dev/cul0 Callout device for ttyL0
1016 1 = /dev/cul1 Callout device for ttyL1
1018 49 block Mylex DAC960 PCI RAID controller; second controller
1019 0 = /dev/rd/c1d0 First disk, whole disk
1020 8 = /dev/rd/c1d1 Second disk, whole disk
1022 248 = /dev/rd/c1d31 32nd disk, whole disk
1024 Partitions are handled as for major 48.
1026 50 char Reserved for GLINT
1028 50 block Mylex DAC960 PCI RAID controller; third controller
1029 0 = /dev/rd/c2d0 First disk, whole disk
1030 8 = /dev/rd/c2d1 Second disk, whole disk
1032 248 = /dev/rd/c2d31 32nd disk, whole disk
1034 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1035 0 = /dev/bc0 First Baycom radio modem
1036 1 = /dev/bc1 Second Baycom radio modem
1038 51 block Mylex DAC960 PCI RAID controller; fourth controller
1039 0 = /dev/rd/c3d0 First disk, whole disk
1040 8 = /dev/rd/c3d1 Second disk, whole disk
1042 248 = /dev/rd/c3d31 32nd disk, whole disk
1044 Partitions are handled as for major 48.
1046 52 char Spellcaster DataComm/BRI ISDN card
1047 0 = /dev/dcbri0 First DataComm card
1048 1 = /dev/dcbri1 Second DataComm card
1049 2 = /dev/dcbri2 Third DataComm card
1050 3 = /dev/dcbri3 Fourth DataComm card
1051 52 block Mylex DAC960 PCI RAID controller; fifth controller
1052 0 = /dev/rd/c4d0 First disk, whole disk
1053 8 = /dev/rd/c4d1 Second disk, whole disk
1055 248 = /dev/rd/c4d31 32nd disk, whole disk
1057 Partitions are handled as for major 48.
1059 53 char BDM interface for remote debugging MC683xx microcontrollers
1060 0 = /dev/pd_bdm0 PD BDM interface on lp0
1061 1 = /dev/pd_bdm1 PD BDM interface on lp1
1062 2 = /dev/pd_bdm2 PD BDM interface on lp2
1063 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1064 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1065 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1067 This device is used for the interfacing to the MC683xx
1068 microcontrollers via Background Debug Mode by use of a
1069 Parallel Port interface. PD is the Motorola Public
1070 Domain Interface and ICD is the commercial interface
1073 53 block Mylex DAC960 PCI RAID controller; sixth controller
1074 0 = /dev/rd/c5d0 First disk, whole disk
1075 8 = /dev/rd/c5d1 Second disk, whole disk
1077 248 = /dev/rd/c5d31 32nd disk, whole disk
1079 Partitions are handled as for major 48.
1081 54 char Electrocardiognosis Holter serial card
1082 0 = /dev/holter0 First Holter port
1083 1 = /dev/holter1 Second Holter port
1084 2 = /dev/holter2 Third Holter port
1086 A custom serial card used by Electrocardiognosis SRL
1087 <mseritan@ottonel.pub.ro> to transfer data from Holter
1088 24-hour heart monitoring equipment.
1090 54 block Mylex DAC960 PCI RAID controller; seventh controller
1091 0 = /dev/rd/c6d0 First disk, whole disk
1092 8 = /dev/rd/c6d1 Second disk, whole disk
1094 248 = /dev/rd/c6d31 32nd disk, whole disk
1096 Partitions are handled as for major 48.
1098 55 char DSP56001 digital signal processor
1099 0 = /dev/dsp56k First DSP56001
1100 55 block Mylex DAC960 PCI RAID controller; eigth controller
1101 0 = /dev/rd/c7d0 First disk, whole disk
1102 8 = /dev/rd/c7d1 Second disk, whole disk
1104 248 = /dev/rd/c7d31 32nd disk, whole disk
1106 Partitions are handled as for major 48.
1108 56 char Apple Desktop Bus
1109 0 = /dev/adb ADB bus control
1111 Additional devices will be added to this number, all
1112 starting with /dev/adb.
1114 56 block Fifth IDE hard disk/CD-ROM interface
1115 0 = /dev/hdi Master: whole disk (or CD-ROM)
1116 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1118 Partitions are handled the same way as for the first
1119 interface (see major number 3).
1121 57 char Hayes ESP serial card
1122 0 = /dev/ttyP0 First ESP port
1123 1 = /dev/ttyP1 Second ESP port
1126 57 block Sixth IDE hard disk/CD-ROM interface
1127 0 = /dev/hdk Master: whole disk (or CD-ROM)
1128 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1130 Partitions are handled the same way as for the first
1131 interface (see major number 3).
1133 58 char Hayes ESP serial card - alternate devices
1134 0 = /dev/cup0 Callout device for ttyP0
1135 1 = /dev/cup1 Callout device for ttyP1
1137 58 block Reserved for logical volume manager
1139 59 char sf firewall package
1140 0 = /dev/firewall Communication with sf kernel module
1142 59 block Generic PDA filesystem device
1143 0 = /dev/pda0 First PDA device
1144 1 = /dev/pda1 Second PDA device
1147 The pda devices are used to mount filesystems on
1148 remote pda's (basically slow handheld machines with
1149 proprietary OS's and limited memory and storage
1150 running small fs translation drivers) through serial /
1151 IRDA / parallel links.
1153 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1155 60-63 char LOCAL/EXPERIMENTAL USE
1156 60-63 block LOCAL/EXPERIMENTAL USE
1157 Allocated for local/experimental use. For devices not
1158 assigned official numbers, these ranges should be
1159 used in order to avoid conflicting with future assignments.
1161 64 char ENskip kernel encryption package
1162 0 = /dev/enskip Communication with ENskip kernel module
1164 64 block Scramdisk/DriveCrypt encrypted devices
1165 0 = /dev/scramdisk/master Master node for ioctls
1166 1 = /dev/scramdisk/1 First encrypted device
1167 2 = /dev/scramdisk/2 Second encrypted device
1169 255 = /dev/scramdisk/255 255th encrypted device
1171 The filename of the encrypted container and the passwords
1172 are sent via ioctls (using the sdmount tool) to the master
1173 node which then activates them via one of the
1174 /dev/scramdisk/x nodes for loopback mounting (all handled
1175 through the sdmount tool).
1177 Requested by: andy@scramdisklinux.org
1179 65 char Sundance "plink" Transputer boards
1180 0 = /dev/plink0 First plink device
1181 1 = /dev/plink1 Second plink device
1182 2 = /dev/plink2 Third plink device
1183 3 = /dev/plink3 Fourth plink device
1184 64 = /dev/rplink0 First plink device, raw
1185 65 = /dev/rplink1 Second plink device, raw
1186 66 = /dev/rplink2 Third plink device, raw
1187 67 = /dev/rplink3 Fourth plink device, raw
1188 128 = /dev/plink0d First plink device, debug
1189 129 = /dev/plink1d Second plink device, debug
1190 130 = /dev/plink2d Third plink device, debug
1191 131 = /dev/plink3d Fourth plink device, debug
1192 192 = /dev/rplink0d First plink device, raw, debug
1193 193 = /dev/rplink1d Second plink device, raw, debug
1194 194 = /dev/rplink2d Third plink device, raw, debug
1195 195 = /dev/rplink3d Fourth plink device, raw, debug
1197 This is a commercial driver; contact James Howes
1198 <jth@prosig.demon.co.uk> for information.
1200 65 block SCSI disk devices (16-31)
1201 0 = /dev/sdq 17th SCSI disk whole disk
1202 16 = /dev/sdr 18th SCSI disk whole disk
1203 32 = /dev/sds 19th SCSI disk whole disk
1205 240 = /dev/sdaf 32nd SCSI disk whole disk
1207 Partitions are handled in the same way as for IDE
1208 disks (see major number 3) except that the limit on
1211 66 char YARC PowerPC PCI coprocessor card
1212 0 = /dev/yppcpci0 First YARC card
1213 1 = /dev/yppcpci1 Second YARC card
1216 66 block SCSI disk devices (32-47)
1217 0 = /dev/sdag 33th SCSI disk whole disk
1218 16 = /dev/sdah 34th SCSI disk whole disk
1219 32 = /dev/sdai 35th SCSI disk whole disk
1221 240 = /dev/sdav 48nd SCSI disk whole disk
1223 Partitions are handled in the same way as for IDE
1224 disks (see major number 3) except that the limit on
1227 67 char Coda network file system
1228 0 = /dev/cfs0 Coda cache manager
1230 See http://www.coda.cs.cmu.edu for information about Coda.
1232 67 block SCSI disk devices (48-63)
1233 0 = /dev/sdaw 49th SCSI disk whole disk
1234 16 = /dev/sdax 50th SCSI disk whole disk
1235 32 = /dev/sday 51st SCSI disk whole disk
1237 240 = /dev/sdbl 64th SCSI disk whole disk
1239 Partitions are handled in the same way as for IDE
1240 disks (see major number 3) except that the limit on
1243 68 char CAPI 2.0 interface
1244 0 = /dev/capi20 Control device
1245 1 = /dev/capi20.00 First CAPI 2.0 application
1246 2 = /dev/capi20.01 Second CAPI 2.0 application
1248 20 = /dev/capi20.19 19th CAPI 2.0 application
1250 ISDN CAPI 2.0 driver for use with CAPI 2.0
1251 applications; currently supports the AVM B1 card.
1253 68 block SCSI disk devices (64-79)
1254 0 = /dev/sdbm 65th SCSI disk whole disk
1255 16 = /dev/sdbn 66th SCSI disk whole disk
1256 32 = /dev/sdbo 67th SCSI disk whole disk
1258 240 = /dev/sdcb 80th SCSI disk whole disk
1260 Partitions are handled in the same way as for IDE
1261 disks (see major number 3) except that the limit on
1264 69 char MA16 numeric accelerator card
1265 0 = /dev/ma16 Board memory access
1267 69 block SCSI disk devices (80-95)
1268 0 = /dev/sdcc 81st SCSI disk whole disk
1269 16 = /dev/sdcd 82nd SCSI disk whole disk
1270 32 = /dev/sdce 83th SCSI disk whole disk
1272 240 = /dev/sdcr 96th SCSI disk whole disk
1274 Partitions are handled in the same way as for IDE
1275 disks (see major number 3) except that the limit on
1278 70 char SpellCaster Protocol Services Interface
1279 0 = /dev/apscfg Configuration interface
1280 1 = /dev/apsauth Authentication interface
1281 2 = /dev/apslog Logging interface
1282 3 = /dev/apsdbg Debugging interface
1283 64 = /dev/apsisdn ISDN command interface
1284 65 = /dev/apsasync Async command interface
1285 128 = /dev/apsmon Monitor interface
1287 70 block SCSI disk devices (96-111)
1288 0 = /dev/sdcs 97th SCSI disk whole disk
1289 16 = /dev/sdct 98th SCSI disk whole disk
1290 32 = /dev/sdcu 99th SCSI disk whole disk
1292 240 = /dev/sddh 112nd SCSI disk whole disk
1294 Partitions are handled in the same way as for IDE
1295 disks (see major number 3) except that the limit on
1298 71 char Computone IntelliPort II serial card
1299 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1300 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1302 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1303 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1304 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1306 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1307 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1308 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1310 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1311 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1312 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1314 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1316 71 block SCSI disk devices (112-127)
1317 0 = /dev/sddi 113th SCSI disk whole disk
1318 16 = /dev/sddj 114th SCSI disk whole disk
1319 32 = /dev/sddk 115th SCSI disk whole disk
1321 240 = /dev/sddx 128th SCSI disk whole disk
1323 Partitions are handled in the same way as for IDE
1324 disks (see major number 3) except that the limit on
1327 72 char Computone IntelliPort II serial card - alternate devices
1328 0 = /dev/cuf0 Callout device for ttyF0
1329 1 = /dev/cuf1 Callout device for ttyF1
1331 63 = /dev/cuf63 Callout device for ttyF63
1332 64 = /dev/cuf64 Callout device for ttyF64
1333 65 = /dev/cuf65 Callout device for ttyF65
1335 127 = /dev/cuf127 Callout device for ttyF127
1336 128 = /dev/cuf128 Callout device for ttyF128
1337 129 = /dev/cuf129 Callout device for ttyF129
1339 191 = /dev/cuf191 Callout device for ttyF191
1340 192 = /dev/cuf192 Callout device for ttyF192
1341 193 = /dev/cuf193 Callout device for ttyF193
1343 255 = /dev/cuf255 Callout device for ttyF255
1345 72 block Compaq Intelligent Drive Array, first controller
1346 0 = /dev/ida/c0d0 First logical drive whole disk
1347 16 = /dev/ida/c0d1 Second logical drive whole disk
1349 240 = /dev/ida/c0d15 16th logical drive whole disk
1351 Partitions are handled the same way as for Mylex
1352 DAC960 (see major number 48) except that the limit on
1355 73 char Computone IntelliPort II serial card - control devices
1356 0 = /dev/ip2ipl0 Loadware device for board 0
1357 1 = /dev/ip2stat0 Status device for board 0
1358 4 = /dev/ip2ipl1 Loadware device for board 1
1359 5 = /dev/ip2stat1 Status device for board 1
1360 8 = /dev/ip2ipl2 Loadware device for board 2
1361 9 = /dev/ip2stat2 Status device for board 2
1362 12 = /dev/ip2ipl3 Loadware device for board 3
1363 13 = /dev/ip2stat3 Status device for board 3
1365 73 block Compaq Intelligent Drive Array, second controller
1366 0 = /dev/ida/c1d0 First logical drive whole disk
1367 16 = /dev/ida/c1d1 Second logical drive whole disk
1369 240 = /dev/ida/c1d15 16th logical drive whole disk
1371 Partitions are handled the same way as for Mylex
1372 DAC960 (see major number 48) except that the limit on
1376 0 = /dev/SCI/0 SCI device 0
1377 1 = /dev/SCI/1 SCI device 1
1380 Currently for Dolphin Interconnect Solutions' PCI-SCI
1383 74 block Compaq Intelligent Drive Array, third controller
1384 0 = /dev/ida/c2d0 First logical drive whole disk
1385 16 = /dev/ida/c2d1 Second logical drive whole disk
1387 240 = /dev/ida/c2d15 16th logical drive whole disk
1389 Partitions are handled the same way as for Mylex
1390 DAC960 (see major number 48) except that the limit on
1393 75 char Specialix IO8+ serial card
1394 0 = /dev/ttyW0 First IO8+ port, first card
1395 1 = /dev/ttyW1 Second IO8+ port, first card
1397 8 = /dev/ttyW8 First IO8+ port, second card
1400 75 block Compaq Intelligent Drive Array, fourth controller
1401 0 = /dev/ida/c3d0 First logical drive whole disk
1402 16 = /dev/ida/c3d1 Second logical drive whole disk
1404 240 = /dev/ida/c3d15 16th logical drive whole disk
1406 Partitions are handled the same way as for Mylex
1407 DAC960 (see major number 48) except that the limit on
1410 76 char Specialix IO8+ serial card - alternate devices
1411 0 = /dev/cuw0 Callout device for ttyW0
1412 1 = /dev/cuw1 Callout device for ttyW1
1414 8 = /dev/cuw8 Callout device for ttyW8
1417 76 block Compaq Intelligent Drive Array, fifth controller
1418 0 = /dev/ida/c4d0 First logical drive whole disk
1419 16 = /dev/ida/c4d1 Second logical drive whole disk
1421 240 = /dev/ida/c4d15 16th logical drive whole disk
1423 Partitions are handled the same way as for Mylex
1424 DAC960 (see major number 48) except that the limit on
1428 77 char ComScire Quantum Noise Generator
1429 0 = /dev/qng ComScire Quantum Noise Generator
1431 77 block Compaq Intelligent Drive Array, sixth controller
1432 0 = /dev/ida/c5d0 First logical drive whole disk
1433 16 = /dev/ida/c5d1 Second logical drive whole disk
1435 240 = /dev/ida/c5d15 16th logical drive whole disk
1437 Partitions are handled the same way as for Mylex
1438 DAC960 (see major number 48) except that the limit on
1442 78 char PAM Software's multimodem boards
1443 0 = /dev/ttyM0 First PAM modem
1444 1 = /dev/ttyM1 Second PAM modem
1447 78 block Compaq Intelligent Drive Array, seventh controller
1448 0 = /dev/ida/c6d0 First logical drive whole disk
1449 16 = /dev/ida/c6d1 Second logical drive whole disk
1451 240 = /dev/ida/c6d15 16th logical drive whole disk
1453 Partitions are handled the same way as for Mylex
1454 DAC960 (see major number 48) except that the limit on
1458 79 char PAM Software's multimodem boards - alternate devices
1459 0 = /dev/cum0 Callout device for ttyM0
1460 1 = /dev/cum1 Callout device for ttyM1
1463 79 block Compaq Intelligent Drive Array, eigth controller
1464 0 = /dev/ida/c7d0 First logical drive whole disk
1465 16 = /dev/ida/c7d1 Second logical drive whole disk
1467 240 = /dev/ida/c715 16th logical drive whole disk
1469 Partitions are handled the same way as for Mylex
1470 DAC960 (see major number 48) except that the limit on
1474 80 char Photometrics AT200 CCD camera
1475 0 = /dev/at200 Photometrics AT200 CCD camera
1477 80 block I2O hard disk
1478 0 = /dev/i2o/hda First I2O hard disk, whole disk
1479 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1481 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1483 Partitions are handled in the same way as for IDE
1484 disks (see major number 3) except that the limit on
1488 0 = /dev/video0 Video capture/overlay device
1490 63 = /dev/video63 Video capture/overlay device
1491 64 = /dev/radio0 Radio device
1493 127 = /dev/radio63 Radio device
1494 192 = /dev/vtx0 Teletext device
1496 223 = /dev/vtx31 Teletext device
1497 224 = /dev/vbi0 Vertical blank interrupt
1499 255 = /dev/vbi31 Vertical blank interrupt
1501 81 block I2O hard disk
1502 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1503 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1505 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1507 Partitions are handled in the same way as for IDE
1508 disks (see major number 3) except that the limit on
1511 82 char WiNRADiO communications receiver card
1512 0 = /dev/winradio0 First WiNRADiO card
1513 1 = /dev/winradio1 Second WiNRADiO card
1516 The driver and documentation may be obtained from
1517 http://www.proximity.com.au/~brian/winradio/
1519 82 block I2O hard disk
1520 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1521 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1523 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1525 Partitions are handled in the same way as for IDE
1526 disks (see major number 3) except that the limit on
1529 83 char Teletext/videotext interfaces {2.6}
1530 0 = /dev/vtx Teletext decoder
1531 16 = /dev/vttuner TV tuner on teletext interface
1533 Devices for the driver contained in the VideoteXt package.
1534 More information on http://home.pages.de/~videotext/
1536 83 block I2O hard disk
1537 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1538 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1540 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1542 Partitions are handled in the same way as for IDE
1543 disks (see major number 3) except that the limit on
1546 84 char Ikon 1011[57] Versatec Greensheet Interface
1547 0 = /dev/ihcp0 First Greensheet port
1548 1 = /dev/ihcp1 Second Greensheet port
1550 84 block I2O hard disk
1551 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1552 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1554 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1556 Partitions are handled in the same way as for IDE
1557 disks (see major number 3) except that the limit on
1560 85 char Linux/SGI shared memory input queue
1561 0 = /dev/shmiq Master shared input queue
1562 1 = /dev/qcntl0 First device pushed
1563 2 = /dev/qcntl1 Second device pushed
1566 85 block I2O hard disk
1567 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1568 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1570 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1572 Partitions are handled in the same way as for IDE
1573 disks (see major number 3) except that the limit on
1576 86 char SCSI media changer
1577 0 = /dev/sch0 First SCSI media changer
1578 1 = /dev/sch1 Second SCSI media changer
1581 86 block I2O hard disk
1582 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1583 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1585 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1587 Partitions are handled in the same way as for IDE
1588 disks (see major number 3) except that the limit on
1591 87 char Sony Control-A1 stereo control bus
1592 0 = /dev/controla0 First device on chain
1593 1 = /dev/controla1 Second device on chain
1596 87 block I2O hard disk
1597 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1598 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1600 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1602 Partitions are handled in the same way as for IDE
1603 disks (see major number 3) except that the limit on
1606 88 char COMX synchronous serial card
1607 0 = /dev/comx0 COMX channel 0
1608 1 = /dev/comx1 COMX channel 1
1611 88 block Seventh IDE hard disk/CD-ROM interface
1612 0 = /dev/hdm Master: whole disk (or CD-ROM)
1613 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1615 Partitions are handled the same way as for the first
1616 interface (see major number 3).
1618 89 char I2C bus interface
1619 0 = /dev/i2c-0 First I2C adapter
1620 1 = /dev/i2c-1 Second I2C adapter
1623 89 block Eighth IDE hard disk/CD-ROM interface
1624 0 = /dev/hdo Master: whole disk (or CD-ROM)
1625 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1627 Partitions are handled the same way as for the first
1628 interface (see major number 3).
1630 90 char Memory Technology Device (RAM, ROM, Flash)
1631 0 = /dev/mtd0 First MTD (rw)
1632 1 = /dev/mtdr0 First MTD (ro)
1634 30 = /dev/mtd15 16th MTD (rw)
1635 31 = /dev/mtdr15 16th MTD (ro)
1637 90 block Ninth IDE hard disk/CD-ROM interface
1638 0 = /dev/hdq Master: whole disk (or CD-ROM)
1639 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1641 Partitions are handled the same way as for the first
1642 interface (see major number 3).
1644 91 char CAN-Bus devices
1645 0 = /dev/can0 First CAN-Bus controller
1646 1 = /dev/can1 Second CAN-Bus controller
1649 91 block Tenth IDE hard disk/CD-ROM interface
1650 0 = /dev/hds Master: whole disk (or CD-ROM)
1651 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1653 Partitions are handled the same way as for the first
1654 interface (see major number 3).
1656 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1658 92 block PPDD encrypted disk driver
1659 0 = /dev/ppdd0 First encrypted disk
1660 1 = /dev/ppdd1 Second encrypted disk
1663 Partitions are handled in the same way as for IDE
1664 disks (see major number 3) except that the limit on
1667 93 char IBM Smart Capture Card frame grabber {2.6}
1668 0 = /dev/iscc0 First Smart Capture Card
1669 1 = /dev/iscc1 Second Smart Capture Card
1671 128 = /dev/isccctl0 First Smart Capture Card control
1672 129 = /dev/isccctl1 Second Smart Capture Card control
1675 93 block NAND Flash Translation Layer filesystem
1676 0 = /dev/nftla First NFTL layer
1677 16 = /dev/nftlb Second NFTL layer
1679 240 = /dev/nftlp 16th NTFL layer
1681 94 char miroVIDEO DC10/30 capture/playback device {2.6}
1682 0 = /dev/dcxx0 First capture card
1683 1 = /dev/dcxx1 Second capture card
1686 94 block IBM S/390 DASD block storage
1687 0 = /dev/dasda First DASD device, major
1688 1 = /dev/dasda1 First DASD device, block 1
1689 2 = /dev/dasda2 First DASD device, block 2
1690 3 = /dev/dasda3 First DASD device, block 3
1691 4 = /dev/dasdb Second DASD device, major
1692 5 = /dev/dasdb1 Second DASD device, block 1
1693 6 = /dev/dasdb2 Second DASD device, block 2
1694 7 = /dev/dasdb3 Second DASD device, block 3
1698 0 = /dev/ipl Filter control device/log file
1699 1 = /dev/ipnat NAT control device/log file
1700 2 = /dev/ipstate State information log file
1701 3 = /dev/ipauth Authentication control device/log file
1704 95 block IBM S/390 VM/ESA minidisk
1705 0 = /dev/msd0 First VM/ESA minidisk
1706 1 = /dev/msd1 Second VM/ESA minidisk
1709 96 char Parallel port ATAPI tape devices
1710 0 = /dev/pt0 First parallel port ATAPI tape
1711 1 = /dev/pt1 Second parallel port ATAPI tape
1713 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1714 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1717 96 block Inverse NAND Flash Translation Layer
1718 0 = /dev/inftla First INFTL layer
1719 16 = /dev/inftlb Second INFTL layer
1721 240 = /dev/inftlp 16th INTFL layer
1723 97 char Parallel port generic ATAPI interface
1724 0 = /dev/pg0 First parallel port ATAPI device
1725 1 = /dev/pg1 Second parallel port ATAPI device
1726 2 = /dev/pg2 Third parallel port ATAPI device
1727 3 = /dev/pg3 Fourth parallel port ATAPI device
1729 These devices support the same API as the generic SCSI
1732 97 block Packet writing for CD/DVD devices
1733 0 = /dev/pktcdvd0 First packet-writing module
1734 1 = /dev/pktcdvd1 Second packet-writing module
1737 98 char Control and Measurement Device (comedi)
1738 0 = /dev/comedi0 First comedi device
1739 1 = /dev/comedi1 Second comedi device
1742 See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
1744 98 block User-mode virtual block device
1745 0 = /dev/ubd0 First user-mode block device
1746 1 = /dev/ubd1 Second user-mode block device
1749 This device is used by the user-mode virtual kernel port.
1751 99 char Raw parallel ports
1752 0 = /dev/parport0 First parallel port
1753 1 = /dev/parport1 Second parallel port
1756 99 block JavaStation flash disk
1757 0 = /dev/jsfd JavaStation flash disk
1759 100 char Telephony for Linux
1760 0 = /dev/phone0 First telephony device
1761 1 = /dev/phone1 Second telephony device
1764 101 char Motorola DSP 56xxx board
1765 0 = /dev/mdspstat Status information
1766 1 = /dev/mdsp1 First DSP board I/O controls
1768 16 = /dev/mdsp16 16th DSP board I/O controls
1770 101 block AMI HyperDisk RAID controller
1771 0 = /dev/amiraid/ar0 First array whole disk
1772 16 = /dev/amiraid/ar1 Second array whole disk
1774 240 = /dev/amiraid/ar15 16th array whole disk
1776 For each device, partitions are added as:
1777 0 = /dev/amiraid/ar? Whole disk
1778 1 = /dev/amiraid/ar?p1 First partition
1779 2 = /dev/amiraid/ar?p2 Second partition
1781 15 = /dev/amiraid/ar?p15 15th partition
1783 102 char Philips SAA5249 Teletext signal decoder {2.6}
1784 0 = /dev/tlk0 First Teletext decoder
1785 1 = /dev/tlk1 Second Teletext decoder
1786 2 = /dev/tlk2 Third Teletext decoder
1787 3 = /dev/tlk3 Fourth Teletext decoder
1789 102 block Compressed block device
1790 0 = /dev/cbd/a First compressed block device, whole device
1791 16 = /dev/cbd/b Second compressed block device, whole device
1793 240 = /dev/cbd/p 16th compressed block device, whole device
1795 Partitions are handled in the same way as for IDE
1796 disks (see major number 3) except that the limit on
1799 103 char Arla network file system
1800 0 = /dev/nnpfs0 First NNPFS device
1801 1 = /dev/nnpfs1 Second NNPFS device
1803 Arla is a free clone of the Andrew File System, AFS.
1804 The NNPFS device gives user mode filesystem
1805 implementations a kernel presence for caching and easy
1806 mounting. For more information about the project,
1807 write to <arla-drinkers@stacken.kth.se> or see
1808 http://www.stacken.kth.se/project/arla/
1810 103 block Audit device
1811 0 = /dev/audit Audit device
1813 104 char Flash BIOS support
1815 104 block Compaq Next Generation Drive Array, first controller
1816 0 = /dev/cciss/c0d0 First logical drive, whole disk
1817 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1819 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1821 Partitions are handled the same way as for Mylex
1822 DAC960 (see major number 48) except that the limit on
1825 105 char Comtrol VS-1000 serial controller
1826 0 = /dev/ttyV0 First VS-1000 port
1827 1 = /dev/ttyV1 Second VS-1000 port
1830 105 block Compaq Next Generation Drive Array, second controller
1831 0 = /dev/cciss/c1d0 First logical drive, whole disk
1832 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1834 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1836 Partitions are handled the same way as for Mylex
1837 DAC960 (see major number 48) except that the limit on
1840 106 char Comtrol VS-1000 serial controller - alternate devices
1841 0 = /dev/cuv0 First VS-1000 port
1842 1 = /dev/cuv1 Second VS-1000 port
1845 106 block Compaq Next Generation Drive Array, third controller
1846 0 = /dev/cciss/c2d0 First logical drive, whole disk
1847 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1849 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1851 Partitions are handled the same way as for Mylex
1852 DAC960 (see major number 48) except that the limit on
1855 107 char 3Dfx Voodoo Graphics device
1856 0 = /dev/3dfx Primary 3Dfx graphics device
1858 107 block Compaq Next Generation Drive Array, fourth controller
1859 0 = /dev/cciss/c3d0 First logical drive, whole disk
1860 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1862 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1864 Partitions are handled the same way as for Mylex
1865 DAC960 (see major number 48) except that the limit on
1868 108 char Device independent PPP interface
1869 0 = /dev/ppp Device independent PPP interface
1871 108 block Compaq Next Generation Drive Array, fifth controller
1872 0 = /dev/cciss/c4d0 First logical drive, whole disk
1873 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1875 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1877 Partitions are handled the same way as for Mylex
1878 DAC960 (see major number 48) except that the limit on
1881 109 char Reserved for logical volume manager
1883 109 block Compaq Next Generation Drive Array, sixth controller
1884 0 = /dev/cciss/c5d0 First logical drive, whole disk
1885 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1887 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1889 Partitions are handled the same way as for Mylex
1890 DAC960 (see major number 48) except that the limit on
1893 110 char miroMEDIA Surround board
1894 0 = /dev/srnd0 First miroMEDIA Surround board
1895 1 = /dev/srnd1 Second miroMEDIA Surround board
1898 110 block Compaq Next Generation Drive Array, seventh controller
1899 0 = /dev/cciss/c6d0 First logical drive, whole disk
1900 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1902 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1904 Partitions are handled the same way as for Mylex
1905 DAC960 (see major number 48) except that the limit on
1908 111 char Philips SAA7146-based audio/video card {2.6}
1909 0 = /dev/av0 First A/V card
1910 1 = /dev/av1 Second A/V card
1913 111 block Compaq Next Generation Drive Array, eigth controller
1914 0 = /dev/cciss/c7d0 First logical drive, whole disk
1915 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1917 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1919 Partitions are handled the same way as for Mylex
1920 DAC960 (see major number 48) except that the limit on
1923 112 char ISI serial card
1924 0 = /dev/ttyM0 First ISI port
1925 1 = /dev/ttyM1 Second ISI port
1928 There is currently a device-naming conflict between
1929 these and PAM multimodems (major 78).
1931 112 block IBM iSeries virtual disk
1932 0 = /dev/iseries/vda First virtual disk, whole disk
1933 8 = /dev/iseries/vdb Second virtual disk, whole disk
1935 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1936 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1938 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1940 Partitions are handled in the same way as for IDE
1941 disks (see major number 3) except that the limit on
1944 113 char ISI serial card - alternate devices
1945 0 = /dev/cum0 Callout device for ttyM0
1946 1 = /dev/cum1 Callout device for ttyM1
1949 113 block IBM iSeries virtual CD-ROM
1951 0 = /dev/iseries/vcda First virtual CD-ROM
1952 1 = /dev/iseries/vcdb Second virtual CD-ROM
1955 114 char Picture Elements ISE board
1956 0 = /dev/ise0 First ISE board
1957 1 = /dev/ise1 Second ISE board
1959 128 = /dev/isex0 Control node for first ISE board
1960 129 = /dev/isex1 Control node for second ISE board
1963 The ISE board is an embedded computer, optimized for
1964 image processing. The /dev/iseN nodes are the general
1965 I/O access to the board, the /dev/isex0 nodes command
1966 nodes used to control the board.
1968 114 block IDE BIOS powered software RAID interfaces such as the
1972 1 = /dev/ataraid/d0p1
1973 2 = /dev/ataraid/d0p2
1975 16 = /dev/ataraid/d1
1976 17 = /dev/ataraid/d1p1
1977 18 = /dev/ataraid/d1p2
1979 255 = /dev/ataraid/d15p15
1981 Partitions are handled in the same way as for IDE
1982 disks (see major number 3) except that the limit on
1985 115 char TI link cable devices (115 was formerly the console driver speaker)
1986 0 = /dev/tipar0 Parallel cable on first parallel port
1988 7 = /dev/tipar7 Parallel cable on seventh parallel port
1990 8 = /dev/tiser0 Serial cable on first serial port
1992 15 = /dev/tiser7 Serial cable on seventh serial port
1994 16 = /dev/tiusb0 First USB cable
1996 47 = /dev/tiusb31 32nd USB cable
1998 115 block NetWare (NWFS) Devices (0-255)
2000 The NWFS (NetWare) devices are used to present a
2001 collection of NetWare Mirror Groups or NetWare
2002 Partitions as a logical storage segment for
2003 use in mounting NetWare volumes. A maximum of
2004 256 NetWare volumes can be supported in a single
2007 http://www.kernel.org/pub/linux/kernel/people/jmerkey/nwfs
2009 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
2010 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
2011 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
2013 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
2015 116 char Advanced Linux Sound Driver (ALSA)
2017 116 block MicroMemory battery backed RAM adapter (NVRAM)
2018 Supports 16 boards, 15 paritions each.
2019 Requested by neilb at cse.unsw.edu.au.
2021 0 = /dev/umem/d0 Whole of first board
2022 1 = /dev/umem/d0p1 First partition of first board
2023 2 = /dev/umem/d0p2 Second partition of first board
2024 15 = /dev/umem/d0p15 15th partition of first board
2026 16 = /dev/umem/d1 Whole of second board
2027 17 = /dev/umem/d1p1 First partition of second board
2029 255= /dev/umem/d15p15 15th partition of 16th board.
2031 117 char COSA/SRP synchronous serial card
2032 0 = /dev/cosa0c0 1st board, 1st channel
2033 1 = /dev/cosa0c1 1st board, 2nd channel
2035 16 = /dev/cosa1c0 2nd board, 1st channel
2036 17 = /dev/cosa1c1 2nd board, 2nd channel
2039 117 block Enterprise Volume Management System (EVMS)
2041 The EVMS driver uses a layered, plug-in model to provide
2042 unparalleled flexibility and extensibility in managing
2043 storage. This allows for easy expansion or customization
2044 of various levels of volume management. Requested by
2045 Mark Peloquin (peloquin at us.ibm.com).
2047 Note: EVMS populates and manages all the devnodes in
2050 http://sf.net/projects/evms
2052 0 = /dev/evms/block_device EVMS block device
2053 1 = /dev/evms/legacyname1 First EVMS legacy device
2054 2 = /dev/evms/legacyname2 Second EVMS legacy device
2056 Both ranges can grow (down or up) until they meet.
2058 254 = /dev/evms/EVMSname2 Second EVMS native device
2059 255 = /dev/evms/EVMSname1 First EVMS native device
2061 Note: legacyname(s) are derived from the normal legacy
2062 device names. For example, /dev/hda5 would become
2065 118 char IBM Cryptographic Accelerator
2066 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2067 1 = /dev/ica0 IBMCA Device 0
2068 2 = /dev/ica1 IBMCA Device 1
2071 119 char VMware virtual network control
2072 0 = /dev/vnet0 1st virtual network
2073 1 = /dev/vnet1 2nd virtual network
2076 120-127 char LOCAL/EXPERIMENTAL USE
2077 120-127 block LOCAL/EXPERIMENTAL USE
2078 Allocated for local/experimental use. For devices not
2079 assigned official numbers, these ranges should be
2080 used in order to avoid conflicting with future assignments.
2082 128-135 char Unix98 PTY masters
2084 These devices should not have corresponding device
2085 nodes; instead they should be accessed through the
2086 /dev/ptmx cloning interface.
2089 128 block SCSI disk devices (128-143)
2090 0 = /dev/sddy 129th SCSI disk whole disk
2091 16 = /dev/sddz 130th SCSI disk whole disk
2092 32 = /dev/sdea 131th SCSI disk whole disk
2094 240 = /dev/sden 144th SCSI disk whole disk
2096 Partitions are handled in the same way as for IDE
2097 disks (see major number 3) except that the limit on
2101 129 block SCSI disk devices (144-159)
2102 0 = /dev/sdeo 145th SCSI disk whole disk
2103 16 = /dev/sdep 146th SCSI disk whole disk
2104 32 = /dev/sdeq 147th SCSI disk whole disk
2106 240 = /dev/sdfd 160th SCSI disk whole disk
2108 Partitions are handled in the same way as for IDE
2109 disks (see major number 3) except that the limit on
2113 130 block SCSI disk devices (160-175)
2114 0 = /dev/sdfe 161st SCSI disk whole disk
2115 16 = /dev/sdff 162nd SCSI disk whole disk
2116 32 = /dev/sdfg 163rd SCSI disk whole disk
2118 240 = /dev/sdft 176th SCSI disk whole disk
2120 Partitions are handled in the same way as for IDE
2121 disks (see major number 3) except that the limit on
2124 131 block SCSI disk devices (176-191)
2125 0 = /dev/sdfu 177th SCSI disk whole disk
2126 16 = /dev/sdfv 178th SCSI disk whole disk
2127 32 = /dev/sdfw 179th SCSI disk whole disk
2129 240 = /dev/sdgj 192nd SCSI disk whole disk
2131 Partitions are handled in the same way as for IDE
2132 disks (see major number 3) except that the limit on
2136 132 block SCSI disk devices (192-207)
2137 0 = /dev/sdgk 193rd SCSI disk whole disk
2138 16 = /dev/sdgl 194th SCSI disk whole disk
2139 32 = /dev/sdgm 195th SCSI disk whole disk
2141 240 = /dev/sdgz 208th SCSI disk whole disk
2143 Partitions are handled in the same way as for IDE
2144 disks (see major number 3) except that the limit on
2148 133 block SCSI disk devices (208-223)
2149 0 = /dev/sdha 209th SCSI disk whole disk
2150 16 = /dev/sdhb 210th SCSI disk whole disk
2151 32 = /dev/sdhc 211th SCSI disk whole disk
2153 240 = /dev/sdhp 224th SCSI disk whole disk
2155 Partitions are handled in the same way as for IDE
2156 disks (see major number 3) except that the limit on
2160 134 block SCSI disk devices (224-239)
2161 0 = /dev/sdhq 225th SCSI disk whole disk
2162 16 = /dev/sdhr 226th SCSI disk whole disk
2163 32 = /dev/sdhs 227th SCSI disk whole disk
2165 240 = /dev/sdif 240th SCSI disk whole disk
2167 Partitions are handled in the same way as for IDE
2168 disks (see major number 3) except that the limit on
2172 135 block SCSI disk devices (240-255)
2173 0 = /dev/sdig 241st SCSI disk whole disk
2174 16 = /dev/sdih 242nd SCSI disk whole disk
2175 32 = /dev/sdih 243rd SCSI disk whole disk
2177 240 = /dev/sdiv 256th SCSI disk whole disk
2179 Partitions are handled in the same way as for IDE
2180 disks (see major number 3) except that the limit on
2184 136-143 char Unix98 PTY slaves
2185 0 = /dev/pts/0 First Unix98 pseudo-TTY
2186 1 = /dev/pts/1 Second Unix98 pesudo-TTY
2189 These device nodes are automatically generated with
2190 the proper permissions and modes by mounting the
2191 devpts filesystem onto /dev/pts with the appropriate
2192 mount options (distribution dependent, however, on
2193 *most* distributions the appropriate options are
2194 "mode=0620,gid=<gid of the "tty" group>".)
2196 136 block Mylex DAC960 PCI RAID controller; ninth controller
2197 0 = /dev/rd/c8d0 First disk, whole disk
2198 8 = /dev/rd/c8d1 Second disk, whole disk
2200 248 = /dev/rd/c8d31 32nd disk, whole disk
2202 Partitions are handled as for major 48.
2204 137 block Mylex DAC960 PCI RAID controller; tenth controller
2205 0 = /dev/rd/c9d0 First disk, whole disk
2206 8 = /dev/rd/c9d1 Second disk, whole disk
2208 248 = /dev/rd/c9d31 32nd disk, whole disk
2210 Partitions are handled as for major 48.
2212 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2213 0 = /dev/rd/c10d0 First disk, whole disk
2214 8 = /dev/rd/c10d1 Second disk, whole disk
2216 248 = /dev/rd/c10d31 32nd disk, whole disk
2218 Partitions are handled as for major 48.
2220 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2221 0 = /dev/rd/c11d0 First disk, whole disk
2222 8 = /dev/rd/c11d1 Second disk, whole disk
2224 248 = /dev/rd/c11d31 32nd disk, whole disk
2226 Partitions are handled as for major 48.
2228 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2229 0 = /dev/rd/c12d0 First disk, whole disk
2230 8 = /dev/rd/c12d1 Second disk, whole disk
2232 248 = /dev/rd/c12d31 32nd disk, whole disk
2234 Partitions are handled as for major 48.
2236 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2237 0 = /dev/rd/c13d0 First disk, whole disk
2238 8 = /dev/rd/c13d1 Second disk, whole disk
2240 248 = /dev/rd/c13d31 32nd disk, whole disk
2242 Partitions are handled as for major 48.
2244 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2245 0 = /dev/rd/c14d0 First disk, whole disk
2246 8 = /dev/rd/c14d1 Second disk, whole disk
2248 248 = /dev/rd/c14d31 32nd disk, whole disk
2250 Partitions are handled as for major 48.
2252 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2253 0 = /dev/rd/c15d0 First disk, whole disk
2254 8 = /dev/rd/c15d1 Second disk, whole disk
2256 248 = /dev/rd/c15d31 32nd disk, whole disk
2258 Partitions are handled as for major 48.
2260 144 char Encapsulated PPP
2261 0 = /dev/pppox0 First PPP over Ethernet
2263 63 = /dev/pppox63 64th PPP over Ethernet
2265 This is primarily used for ADSL.
2267 The SST 5136-DN DeviceNet interface driver has been
2268 relocated to major 183 due to an unfortunate conflict.
2270 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2271 0 = mounted device 256
2272 255 = mounted device 511
2274 145 char SAM9407-based soundcard
2276 1 = /dev/sam0_sequencer
2277 2 = /dev/sam0_midi00
2280 6 = /dev/sam0_sndstat
2281 18 = /dev/sam0_midi01
2282 34 = /dev/sam0_midi02
2283 50 = /dev/sam0_midi03
2284 64 = /dev/sam1_mixer
2286 128 = /dev/sam2_mixer
2288 192 = /dev/sam3_mixer
2291 Device functions match OSS, but offer a number of
2292 addons, which are sam9407 specific. OSS can be
2293 operated simultaneously, taking care of the codec.
2295 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2296 0 = mounted device 512
2297 255 = mounted device 767
2299 146 char SYSTRAM SCRAMNet mirrored-memory network
2300 0 = /dev/scramnet0 First SCRAMNet device
2301 1 = /dev/scramnet1 Second SCRAMNet device
2304 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2305 0 = mounted device 768
2306 255 = mounted device 1023
2308 147 char Aureal Semiconductor Vortex Audio device
2309 0 = /dev/aureal0 First Aureal Vortex
2310 1 = /dev/aureal1 Second Aureal Vortex
2313 147 block Distributed Replicated Block Device (DRBD)
2314 0 = /dev/drbd0 First DRBD device
2315 1 = /dev/drbd1 Second DRBD device
2318 148 char Technology Concepts serial card
2319 0 = /dev/ttyT0 First TCL port
2320 1 = /dev/ttyT1 Second TCL port
2323 149 char Technology Concepts serial card - alternate devices
2324 0 = /dev/cut0 Callout device for ttyT0
2325 1 = /dev/cut0 Callout device for ttyT1
2328 150 char Real-Time Linux FIFOs
2329 0 = /dev/rtf0 First RTLinux FIFO
2330 1 = /dev/rtf1 Second RTLinux FIFO
2333 151 char DPT I2O SmartRaid V controller
2334 0 = /dev/dpti0 First DPT I2O adapter
2335 1 = /dev/dpti1 Second DPT I2O adapter
2338 152 char EtherDrive Control Device
2339 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2340 1 = /dev/etherd/err Monitor errors
2341 2 = /dev/etherd/raw Raw AoE packet monitor
2343 152 block EtherDrive Block Devices
2344 0 = /dev/etherd/0 EtherDrive 0
2346 255 = /dev/etherd/255 EtherDrive 255
2348 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2349 0 = /dev/spi0 First SPI device on the bus
2350 1 = /dev/spi1 Second SPI device on the bus
2352 15 = /dev/spi15 Sixteenth SPI device on the bus
2354 153 block Enhanced Metadisk RAID (EMD) storage units
2355 0 = /dev/emd/0 First unit
2356 1 = /dev/emd/0p1 Partition 1 on First unit
2357 2 = /dev/emd/0p2 Partition 2 on First unit
2359 15 = /dev/emd/0p15 Partition 15 on First unit
2361 16 = /dev/emd/1 Second unit
2362 32 = /dev/emd/2 Third unit
2364 240 = /dev/emd/15 Sixteenth unit
2366 Partitions are handled in the same way as for IDE
2367 disks (see major number 3) except that the limit on
2370 154 char Specialix RIO serial card
2371 0 = /dev/ttySR0 First RIO port
2373 255 = /dev/ttySR255 256th RIO port
2375 155 char Specialix RIO serial card - alternate devices
2376 0 = /dev/cusr0 Callout device for ttySR0
2378 255 = /dev/cusr255 Callout device for ttySR255
2380 156 char Specialix RIO serial card
2381 0 = /dev/ttySR256 257th RIO port
2383 255 = /dev/ttySR511 512th RIO port
2385 157 char Specialix RIO serial card - alternate devices
2386 0 = /dev/cusr256 Callout device for ttySR256
2388 255 = /dev/cusr511 Callout device for ttySR511
2390 158 char Dialogic GammaLink fax driver
2391 0 = /dev/gfax0 GammaLink channel 0
2392 1 = /dev/gfax1 GammaLink channel 1
2398 160 char General Purpose Instrument Bus (GPIB)
2399 0 = /dev/gpib0 First GPIB bus
2400 1 = /dev/gpib1 Second GPIB bus
2403 160 block Carmel 8-port SATA Disks on First Controller
2404 0 = /dev/carmel/0 SATA disk 0 whole disk
2405 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2407 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2409 32 = /dev/carmel/1 SATA disk 1 whole disk
2410 64 = /dev/carmel/2 SATA disk 2 whole disk
2412 224 = /dev/carmel/7 SATA disk 7 whole disk
2414 Partitions are handled in the same way as for IDE
2415 disks (see major number 3) except that the limit on
2418 161 char IrCOMM devices (IrDA serial/parallel emulation)
2419 0 = /dev/ircomm0 First IrCOMM device
2420 1 = /dev/ircomm1 Second IrCOMM device
2422 16 = /dev/irlpt0 First IrLPT device
2423 17 = /dev/irlpt1 Second IrLPT device
2426 161 block Carmel 8-port SATA Disks on Second Controller
2427 0 = /dev/carmel/8 SATA disk 8 whole disk
2428 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2430 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2432 32 = /dev/carmel/9 SATA disk 9 whole disk
2433 64 = /dev/carmel/10 SATA disk 10 whole disk
2435 224 = /dev/carmel/15 SATA disk 15 whole disk
2437 Partitions are handled in the same way as for IDE
2438 disks (see major number 3) except that the limit on
2441 162 char Raw block device interface
2442 0 = /dev/rawctl Raw I/O control device
2443 1 = /dev/raw/raw1 First raw I/O device
2444 2 = /dev/raw/raw2 Second raw I/O device
2447 163 char UNASSIGNED (was Radio Tech BIM-XXX-RS232 radio modem - see 51)
2449 164 char Chase Research AT/PCI-Fast serial card
2450 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2452 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2453 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2455 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2456 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2458 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2459 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2461 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2463 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2464 0 = /dev/cuch0 Callout device for ttyCH0
2466 63 = /dev/cuch63 Callout device for ttyCH63
2468 166 char ACM USB modems
2469 0 = /dev/ttyACM0 First ACM modem
2470 1 = /dev/ttyACM1 Second ACM modem
2473 167 char ACM USB modems - alternate devices
2474 0 = /dev/cuacm0 Callout device for ttyACM0
2475 1 = /dev/cuacm1 Callout device for ttyACM1
2478 168 char Eracom CSA7000 PCI encryption adaptor
2479 0 = /dev/ecsa0 First CSA7000
2480 1 = /dev/ecsa1 Second CSA7000
2483 169 char Eracom CSA8000 PCI encryption adaptor
2484 0 = /dev/ecsa8-0 First CSA8000
2485 1 = /dev/ecsa8-1 Second CSA8000
2488 170 char AMI MegaRAC remote access controller
2489 0 = /dev/megarac0 First MegaRAC card
2490 1 = /dev/megarac1 Second MegaRAC card
2493 171 char Reserved for IEEE 1394 (Firewire)
2496 172 char Moxa Intellio serial card
2497 0 = /dev/ttyMX0 First Moxa port
2498 1 = /dev/ttyMX1 Second Moxa port
2500 127 = /dev/ttyMX127 128th Moxa port
2501 128 = /dev/moxactl Moxa control port
2503 173 char Moxa Intellio serial card - alternate devices
2504 0 = /dev/cumx0 Callout device for ttyMX0
2505 1 = /dev/cumx1 Callout device for ttyMX1
2507 127 = /dev/cumx127 Callout device for ttyMX127
2509 174 char SmartIO serial card
2510 0 = /dev/ttySI0 First SmartIO port
2511 1 = /dev/ttySI1 Second SmartIO port
2514 175 char SmartIO serial card - alternate devices
2515 0 = /dev/cusi0 Callout device for ttySI0
2516 1 = /dev/cusi1 Callout device for ttySI1
2519 176 char nCipher nFast PCI crypto accelerator
2520 0 = /dev/nfastpci0 First nFast PCI device
2521 1 = /dev/nfastpci1 First nFast PCI device
2524 177 char TI PCILynx memory spaces
2525 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2527 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2528 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2530 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2531 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2533 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2535 178 char Giganet cLAN1xxx virtual interface adapter
2536 0 = /dev/clanvi0 First cLAN adapter
2537 1 = /dev/clanvi1 Second cLAN adapter
2540 179 char CCube DVXChip-based PCI products
2541 0 = /dev/dvxirq0 First DVX device
2542 1 = /dev/dvxirq1 Second DVX device
2545 180 char USB devices
2546 0 = /dev/usb/lp0 First USB printer
2548 15 = /dev/usb/lp15 16th USB printer
2549 16 = /dev/usb/mouse0 First USB mouse
2551 31 = /dev/usb/mouse15 16th USB mouse
2552 32 = /dev/usb/ez0 First USB firmware loader
2554 47 = /dev/usb/ez15 16th USB firmware loader
2555 48 = /dev/usb/scanner0 First USB scanner
2557 63 = /dev/usb/scanner15 16th USB scanner
2558 64 = /dev/usb/rio500 Diamond Rio 500
2559 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2560 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2563 181 char Conrad Electronic parallel port radio clocks
2564 0 = /dev/pcfclock0 First Conrad radio clock
2565 1 = /dev/pcfclock1 Second Conrad radio clock
2568 182 char Picture Elements THR2 binarizer
2569 0 = /dev/pethr0 First THR2 board
2570 1 = /dev/pethr1 Second THR2 board
2573 183 char SST 5136-DN DeviceNet interface
2574 0 = /dev/ss5136dn0 First DeviceNet interface
2575 1 = /dev/ss5136dn1 Second DeviceNet interface
2578 This device used to be assigned to major number 144.
2579 It had to be moved due to an unfortunate conflict.
2581 184 char Picture Elements' video simulator/sender
2582 0 = /dev/pevss0 First sender board
2583 1 = /dev/pevss1 Second sender board
2586 185 char InterMezzo high availability file system
2587 0 = /dev/intermezzo0 First cache manager
2588 1 = /dev/intermezzo1 Second cache manager
2591 See http://www.inter-mezzo.org/ for more information.
2593 186 char Object-based storage control device
2594 0 = /dev/obd0 First obd control device
2595 1 = /dev/obd1 Second obd control device
2598 See ftp://ftp.lustre.org/pub/obd for code and information.
2600 187 char DESkey hardware encryption device
2601 0 = /dev/deskey0 First DES key
2602 1 = /dev/deskey1 Second DES key
2605 188 char USB serial converters
2606 0 = /dev/ttyUSB0 First USB serial converter
2607 1 = /dev/ttyUSB1 Second USB serial converter
2610 189 char USB serial converters - alternate devices
2611 0 = /dev/cuusb0 Callout device for ttyUSB0
2612 1 = /dev/cuusb1 Callout device for ttyUSB1
2615 190 char Kansas City tracker/tuner card
2616 0 = /dev/kctt0 First KCT/T card
2617 1 = /dev/kctt1 Second KCT/T card
2620 191 char Reserved for PCMCIA
2622 192 char Kernel profiling interface
2623 0 = /dev/profile Profiling control device
2624 1 = /dev/profile0 Profiling device for CPU 0
2625 2 = /dev/profile1 Profiling device for CPU 1
2628 193 char Kernel event-tracing interface
2629 0 = /dev/trace Tracing control device
2630 1 = /dev/trace0 Tracing device for CPU 0
2631 2 = /dev/trace1 Tracing device for CPU 1
2634 194 char linVideoStreams (LINVS)
2635 0 = /dev/mvideo/status0 Video compression status
2636 1 = /dev/mvideo/stream0 Video stream
2637 2 = /dev/mvideo/frame0 Single compressed frame
2638 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2639 4 = /dev/mvideo/codec0 Direct codec access
2640 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2642 16 = /dev/mvideo/status1 Second device
2644 32 = /dev/mvideo/status2 Third device
2647 240 = /dev/mvideo/status15 16th device
2650 195 char Nvidia graphics devices
2651 0 = /dev/nvidia0 First Nvidia card
2652 1 = /dev/nvidia1 Second Nvidia card
2654 255 = /dev/nvidiactl Nvidia card control device
2656 196 char Tormenta T1 card
2657 0 = /dev/tor/0 Master control channel for all cards
2658 1 = /dev/tor/1 First DS0
2659 2 = /dev/tor/2 Second DS0
2661 48 = /dev/tor/48 48th DS0
2662 49 = /dev/tor/49 First pseudo-channel
2663 50 = /dev/tor/50 Second pseudo-channel
2666 197 char OpenTNF tracing facility
2667 0 = /dev/tnf/t0 Trace 0 data extraction
2668 1 = /dev/tnf/t1 Trace 1 data extraction
2670 128 = /dev/tnf/status Tracing facility status
2671 130 = /dev/tnf/trace Tracing device
2673 198 char Total Impact TPMP2 quad coprocessor PCI card
2674 0 = /dev/tpmp2/0 First card
2675 1 = /dev/tpmp2/1 Second card
2678 199 char Veritas volume manager (VxVM) volumes
2679 0 = /dev/vx/rdsk/*/* First volume
2680 1 = /dev/vx/rdsk/*/* Second volume
2683 199 block Veritas volume manager (VxVM) volumes
2684 0 = /dev/vx/dsk/*/* First volume
2685 1 = /dev/vx/dsk/*/* Second volume
2688 The namespace in these directories is maintained by
2689 the user space VxVM software.
2691 200 char Veritas VxVM configuration interface
2692 0 = /dev/vx/config Configuration access node
2693 1 = /dev/vx/trace Volume i/o trace access node
2694 2 = /dev/vx/iod Volume i/o daemon access node
2695 3 = /dev/vx/info Volume information access node
2696 4 = /dev/vx/task Volume tasks access node
2697 5 = /dev/vx/taskmon Volume tasks monitor daemon
2699 201 char Veritas VxVM dynamic multipathing driver
2700 0 = /dev/vx/rdmp/* First multipath device
2701 1 = /dev/vx/rdmp/* Second multipath device
2703 201 block Veritas VxVM dynamic multipathing driver
2704 0 = /dev/vx/dmp/* First multipath device
2705 1 = /dev/vx/dmp/* Second multipath device
2708 The namespace in these directories is maintained by
2709 the user space VxVM software.
2711 202 char CPU model-specific registers
2712 0 = /dev/cpu/0/msr MSRs on CPU 0
2713 1 = /dev/cpu/1/msr MSRs on CPU 1
2716 203 char CPU CPUID information
2717 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2718 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2721 204 char Low-density serial ports
2722 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2723 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2724 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2725 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2726 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2727 5 = /dev/ttySA0 StrongARM builtin serial port 0
2728 6 = /dev/ttySA1 StrongARM builtin serial port 1
2729 7 = /dev/ttySA2 StrongARM builtin serial port 2
2730 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2731 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2732 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2733 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2734 12 = /dev/ttyFW0 Firmware console - port 0
2735 13 = /dev/ttyFW1 Firmware console - port 1
2736 14 = /dev/ttyFW2 Firmware console - port 2
2737 15 = /dev/ttyFW3 Firmware console - port 3
2738 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2740 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2741 32 = /dev/ttyDB0 DataBooster serial port 0
2743 39 = /dev/ttyDB7 DataBooster serial port 7
2744 40 = /dev/ttySG0 SGI Altix console port
2745 41 = /dev/ttySMX0 Motorola i.MX - port 0
2746 42 = /dev/ttySMX1 Motorola i.MX - port 1
2747 43 = /dev/ttySMX2 Motorola i.MX - port 2
2748 44 = /dev/ttyMM0 Marvell MPSC - port 0
2749 45 = /dev/ttyMM1 Marvell MPSC - port 1
2751 205 char Low-density serial ports (alternate device)
2752 0 = /dev/culu0 Callout device for ttyLU0
2753 1 = /dev/culu1 Callout device for ttyLU1
2754 2 = /dev/culu2 Callout device for ttyLU2
2755 3 = /dev/culu3 Callout device for ttyLU3
2756 4 = /dev/cufb0 Callout device for ttyFB0
2757 5 = /dev/cusa0 Callout device for ttySA0
2758 6 = /dev/cusa1 Callout device for ttySA1
2759 7 = /dev/cusa2 Callout device for ttySA2
2760 8 = /dev/cusc0 Callout device for ttySC0
2761 9 = /dev/cusc1 Callout device for ttySC1
2762 10 = /dev/cusc2 Callout device for ttySC2
2763 11 = /dev/cusc3 Callout device for ttySC3
2764 12 = /dev/cufw0 Callout device for ttyFW0
2765 13 = /dev/cufw1 Callout device for ttyFW1
2766 14 = /dev/cufw2 Callout device for ttyFW2
2767 15 = /dev/cufw3 Callout device for ttyFW3
2768 16 = /dev/cuam0 Callout device for ttyAM0
2770 31 = /dev/cuam15 Callout device for ttyAM15
2771 32 = /dev/cudb0 Callout device for ttyDB0
2773 39 = /dev/cudb7 Callout device for ttyDB7
2774 40 = /dev/cusg0 Callout device for ttySG0
2775 41 = /dev/ttySMX0 Callout device for ttySMX0
2776 42 = /dev/ttySMX1 Callout device for ttySMX1
2777 43 = /dev/ttySMX2 Callout device for ttySMX2
2779 206 char OnStream SC-x0 tape devices
2780 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2781 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2783 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2784 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2786 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2787 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2789 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2790 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2792 128 = /dev/nosst0 No rewind version of /dev/osst0
2793 129 = /dev/nosst1 No rewind version of /dev/osst1
2795 160 = /dev/nosst0l No rewind version of /dev/osst0l
2796 161 = /dev/nosst1l No rewind version of /dev/osst1l
2798 192 = /dev/nosst0m No rewind version of /dev/osst0m
2799 193 = /dev/nosst1m No rewind version of /dev/osst1m
2801 224 = /dev/nosst0a No rewind version of /dev/osst0a
2802 225 = /dev/nosst1a No rewind version of /dev/osst1a
2805 The OnStream SC-x0 SCSI tapes do not support the
2806 standard SCSI SASD command set and therefore need
2807 their own driver "osst". Note that the IDE, USB (and
2808 maybe ParPort) versions may be driven via ide-scsi or
2809 usb-storage SCSI emulation and this osst device and
2810 driver as well. The ADR-x0 drives are QIC-157
2811 compliant and don't need osst.
2813 207 char Compaq ProLiant health feature indicate
2814 0 = /dev/cpqhealth/cpqw Redirector interface
2815 1 = /dev/cpqhealth/crom EISA CROM
2816 2 = /dev/cpqhealth/cdt Data Table
2817 3 = /dev/cpqhealth/cevt Event Log
2818 4 = /dev/cpqhealth/casr Automatic Server Recovery
2819 5 = /dev/cpqhealth/cecc ECC Memory
2820 6 = /dev/cpqhealth/cmca Machine Check Architecture
2821 7 = /dev/cpqhealth/ccsm Deprecated CDT
2822 8 = /dev/cpqhealth/cnmi NMI Handling
2823 9 = /dev/cpqhealth/css Sideshow Management
2824 10 = /dev/cpqhealth/cram CMOS interface
2825 11 = /dev/cpqhealth/cpci PCI IRQ interface
2827 208 char User space serial ports
2828 0 = /dev/ttyU0 First user space serial port
2829 1 = /dev/ttyU1 Second user space serial port
2832 209 char User space serial ports (alternate devices)
2833 0 = /dev/cuu0 Callout device for ttyU0
2834 1 = /dev/cuu1 Callout device for ttyU1
2837 210 char SBE, Inc. sync/async serial card
2838 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2839 1 = /dev/sbei/dld0 Download device for board 0
2840 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2841 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2842 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2843 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2844 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2845 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2846 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2847 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2848 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2849 11 = /dev/sbei/dld1 Download device for board 1
2850 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2851 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2852 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2853 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2854 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2855 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2856 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2857 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2860 Yes, each board is really spaced 10 (decimal) apart.
2862 211 char Addinum CPCI1500 digital I/O card
2863 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2864 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2867 212 char LinuxTV.org DVB driver subsystem
2869 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2870 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2871 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2872 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2873 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2874 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2875 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2876 7 = /dev/dvb/adapter0/net0 first network device of first card
2877 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2878 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2880 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2882 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2884 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2887 216 char USB BlueTooth devices
2888 0 = /dev/ttyUB0 First USB BlueTooth device
2889 1 = /dev/ttyUB1 Second USB BlueTooth device
2892 217 char USB BlueTooth devices (alternate devices)
2893 0 = /dev/cuub0 Callout device for ttyUB0
2894 1 = /dev/cuub1 Callout device for ttyUB1
2897 218 char The Logical Company bus Unibus/Qbus adapters
2898 0 = /dev/logicalco/bci/0 First bus adapter
2899 1 = /dev/logicalco/bci/1 First bus adapter
2902 219 char The Logical Company DCI-1300 digital I/O card
2903 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2904 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2907 220 char Myricom Myrinet "GM" board
2908 0 = /dev/myricom/gm0 First Myrinet GM board
2909 1 = /dev/myricom/gmp0 First board "root access"
2910 2 = /dev/myricom/gm1 Second Myrinet GM board
2911 3 = /dev/myricom/gmp1 Second board "root access"
2915 0 = /dev/bus/vme/m0 First master image
2916 1 = /dev/bus/vme/m1 Second master image
2917 2 = /dev/bus/vme/m2 Third master image
2918 3 = /dev/bus/vme/m3 Fourth master image
2919 4 = /dev/bus/vme/s0 First slave image
2920 5 = /dev/bus/vme/s1 Second slave image
2921 6 = /dev/bus/vme/s2 Third slave image
2922 7 = /dev/bus/vme/s3 Fourth slave image
2923 8 = /dev/bus/vme/ctl Control
2925 It is expected that all VME bus drivers will use the
2926 same interface. For interface documentation see
2927 http://www.vmelinux.org/.
2929 224 char A2232 serial card
2930 0 = /dev/ttyY0 First A2232 port
2931 1 = /dev/ttyY1 Second A2232 port
2934 225 char A2232 serial card (alternate devices)
2935 0 = /dev/cuy0 Callout device for ttyY0
2936 1 = /dev/cuy1 Callout device for ttyY1
2939 226 char Direct Rendering Infrastructure (DRI)
2940 0 = /dev/dri/card0 First graphics card
2941 1 = /dev/dri/card1 Second graphics card
2944 227 char IBM 3270 terminal Unix tty access
2945 1 = /dev/3270/tty1 First 3270 terminal
2946 2 = /dev/3270/tty2 Seconds 3270 terminal
2949 228 char IBM 3270 terminal block-mode access
2950 0 = /dev/3270/tub Controlling interface
2951 1 = /dev/3270/tub1 First 3270 terminal
2952 2 = /dev/3270/tub2 Second 3270 terminal
2955 229 char IBM iSeries virtual console
2956 0 = /dev/iseries/vtty0 First console port
2957 1 = /dev/iseries/vtty1 Second console port
2960 230 char IBM iSeries virtual tape
2961 0 = /dev/iseries/vt0 First virtual tape, mode 0
2962 1 = /dev/iseries/vt1 Second virtual tape, mode 0
2964 32 = /dev/iseries/vt0l First virtual tape, mode 1
2965 33 = /dev/iseries/vt1l Second virtual tape, mode 1
2967 64 = /dev/iseries/vt0m First virtual tape, mode 2
2968 65 = /dev/iseries/vt1m Second virtual tape, mode 2
2970 96 = /dev/iseries/vt0a First virtual tape, mode 3
2971 97 = /dev/iseries/vt1a Second virtual tape, mode 3
2973 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
2974 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
2976 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
2977 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
2979 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
2980 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
2982 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
2983 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
2986 "No rewind" refers to the omission of the default
2987 automatic rewind on device close. The MTREW or MTOFFL
2988 ioctl()'s can be used to rewind the tape regardless of
2989 the device used to access it.
2993 240-254 char LOCAL/EXPERIMENTAL USE
2994 240-254 block LOCAL/EXPERIMENTAL USE
2995 Allocated for local/experimental use. For devices not
2996 assigned official numbers, these ranges should be
2997 used in order to avoid conflicting with future assignments.
3002 This major is reserved to assist the expansion to a
3003 larger number space. No device nodes with this major
3004 should ever be created on the filesystem.
3006 **** ADDITIONAL /dev DIRECTORY ENTRIES
3008 This section details additional entries that should or may exist in
3009 the /dev directory. It is preferred that symbolic links use the same
3010 form (absolute or relative) as is indicated here. Links are
3011 classified as "hard" or "symbolic" depending on the preferred type of
3012 link; if possible, the indicated type of link should be used.
3017 These links should exist on all systems:
3019 /dev/fd /proc/self/fd symbolic File descriptors
3020 /dev/stdin fd/0 symbolic stdin file descriptor
3021 /dev/stdout fd/1 symbolic stdout file descriptor
3022 /dev/stderr fd/2 symbolic stderr file descriptor
3023 /dev/nfsd socksys symbolic Required by iBCS-2
3024 /dev/X0R null symbolic Required by iBCS-2
3026 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3030 It is recommended that these links exist on all systems:
3032 /dev/core /proc/kcore symbolic Backward compatibility
3033 /dev/ramdisk ram0 symbolic Backward compatibility
3034 /dev/ftape qft0 symbolic Backward compatibility
3035 /dev/bttv0 video0 symbolic Backward compatibility
3036 /dev/radio radio0 symbolic Backward compatibility
3037 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3038 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3040 Locally defined links
3042 The following links may be established locally to conform to the
3043 configuration of the system. This is merely a tabulation of existing
3044 practice, and does not constitute a recommendation. However, if they
3045 exist, they should have the following uses.
3047 /dev/mouse mouse port symbolic Current mouse device
3048 /dev/tape tape device symbolic Current tape device
3049 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3050 /dev/cdwriter CD-writer symbolic Current CD-writer device
3051 /dev/scanner scanner symbolic Current scanner device
3052 /dev/modem modem port symbolic Current dialout device
3053 /dev/root root device symbolic Current root filesystem
3054 /dev/swap swap device symbolic Current swap device
3056 /dev/modem should not be used for a modem which supports dialin as
3057 well as dialout, as it tends to cause lock file problems. If it
3058 exists, /dev/modem should point to the appropriate primary TTY device
3059 (the use of the alternate callout devices is deprecated).
3061 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3062 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3063 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3064 SCSI devices (/dev/sg*).
3066 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3067 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3071 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3073 /dev/printer socket lpd local socket
3074 /dev/log socket syslog local socket
3075 /dev/gpmdata socket gpm mouse multiplexer
3079 The following names are reserved for mounting special filesystems
3080 under /dev. These special filesystems provide kernel interfaces that
3081 cannot be provided with standard device nodes.
3083 /dev/pts devpts PTY slave filesystem
3084 /dev/shm tmpfs POSIX shared memory maintenance access
3086 **** TERMINAL DEVICES
3088 Terminal, or TTY devices are a special class of character devices. A
3089 terminal device is any device that could act as a controlling terminal
3090 for a session; this includes virtual consoles, serial ports, and
3091 pseudoterminals (PTYs).
3093 All terminal devices share a common set of capabilities known as line
3094 diciplines; these include the common terminal line dicipline as well
3095 as SLIP and PPP modes.
3097 All terminal devices are named similarly; this section explains the
3098 naming and use of the various types of TTYs. Note that the naming
3099 conventions include several historical warts; some of these are
3100 Linux-specific, some were inherited from other systems, and some
3101 reflect Linux outgrowing a borrowed convention.
3103 A hash mark (#) in a device name is used here to indicate a decimal
3104 number without leading zeroes.
3106 Virtual consoles and the console device
3108 Virtual consoles are full-screen terminal displays on the system video
3109 monitor. Virtual consoles are named /dev/tty#, with numbering
3110 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3111 /dev/tty0 is the device that should be used to access the system video
3112 card on those architectures for which the frame buffer devices
3113 (/dev/fb*) are not applicable. Do not use /dev/console
3116 The console device, /dev/console, is the device to which system
3117 messages should be sent, and on which logins should be permitted in
3118 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3119 by the kernel; for previous versions it should be a symbolic link to
3120 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3121 a serial port primary (tty*, not cu*) device, depending on the
3122 configuration of the system.
3126 Serial ports are RS-232 serial ports and any device which simulates
3127 one, either in hardware (such as internal modems) or in software (such
3128 as the ISDN driver.) Under Linux, each serial ports has two device
3129 names, the primary or callin device and the alternate or callout one.
3130 Each kind of device is indicated by a different letter. For any
3131 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3132 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3133 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3134 expected that multiple letters will be used; all letters will be upper
3135 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3136 "cu" device (e.g. /dev/cudp#).
3138 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3140 The alternate devices provide for kernel-based exclusion and somewhat
3141 different defaults than the primary devices. Their main purpose is to
3142 allow the use of serial ports with programs with no inherent or broken
3143 support for serial ports. Their use is deprecated, and they may be
3144 removed from a future version of Linux.
3146 Arbitration of serial ports is provided by the use of lock files with
3147 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3148 be the PID of the locking process as an ASCII number.
3150 It is common practice to install links such as /dev/modem
3151 which point to serial ports. In order to ensure proper locking in the
3152 presence of these links, it is recommended that software chase
3153 symlinks and lock all possible names; additionally, it is recommended
3154 that a lock file be installed with the corresponding alternate
3155 device. In order to avoid deadlocks, it is recommended that the locks
3156 are acquired in the following order, and released in the reverse:
3158 1. The symbolic link name, if any (/var/lock/LCK..modem)
3159 2. The "tty" name (/var/lock/LCK..ttyS2)
3160 3. The alternate device name (/var/lock/LCK..cua2)
3162 In the case of nested symbolic links, the lock files should be
3163 installed in the order the symlinks are resolved.
3165 Under no circumstances should an application hold a lock while waiting
3166 for another to be released. In addition, applications which attempt
3167 to create lock files for the corresponding alternate device names
3168 should take into account the possibility of being used on a non-serial
3169 port TTY, for which no alternate device would exist.
3171 Pseudoterminals (PTYs)
3173 Pseudoterminals, or PTYs, are used to create login sessions or provide
3174 other capabilities requiring a TTY line dicipline (including SLIP or
3175 PPP capability) to arbitrary data-generation processes. Each PTY has
3176 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3177 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3178 allowing each master side to be opened only once.
3180 Once the master side has been opened, the corresponding slave device
3181 can be used in the same manner as any TTY device. The master and
3182 slave devices are connected by the kernel, generating the equivalent
3183 of a bidirectional pipe with TTY capabilities.
3185 Recent versions of the Linux kernels and GNU libc contain support for
3186 the System V/Unix98 naming scheme for PTYs, which assigns a common
3187 device, /dev/ptmx, to all the masters (opening it will automatically
3188 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3189 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3190 in our notation). This removes the problem of exhausting the
3191 namespace and enables the kernel to automatically create the device
3192 nodes for the slaves on demand using the "devpts" filesystem.
git://git.onelab.eu / linux-2.6.git / blob