looks like f10's mkfs.vfat (3.0.0) cowardly refuses to overwrite its output

diff --git a/build.sh b/build.sh
index 344ccb0..60e7295 100755 (executable)
--- a/build.sh
+++ b/build.sh
@@ -417,6 +417,7 @@ function build_usb() {
     local usb="$1" ; shift
     local custom="$1"
 
+    rm -f "$usb"
     mkfs.vfat -C "$usb" $(($(du -Lsk $ISOFS | awk '{ print $1; }') + $FREE_SPACE))
 
     # Populate it