utils.sysexec( "umount %s/proc" % SYSIMG_PATH, log )
utils.sysexec_noerr( "umount %s/dev" % SYSIMG_PATH, log )
utils.sysexec_noerr( "umount %s/sys" % SYSIMG_PATH, log )
utils.sysexec( "umount %s/proc" % SYSIMG_PATH, log )
utils.sysexec_noerr( "umount %s/dev" % SYSIMG_PATH, log )
utils.sysexec_noerr( "umount %s/sys" % SYSIMG_PATH, log )