diskette change problems

clock@ghost.btnet.cz
Thu, 29 Mar 2001 12:38:31 +0200


I put a write-protected diskette into fd0
cat /dev/zero > /dev/fd0: readonly filesystem
then removed dikette, switched the plastic nibble
reinserted diskette
cat /dev/zero > /dev/fd0 : readonly filesystem
removed the diskette
cat /dev/zero: a bunch of garbage, then kernel spasms about sectors not found and
commands not performed
reinserted the diskette
cat /dev/zero > /dev/fd0: readonly filesystem
rebooted the machine
cat /dev/zero > /dev/fd0: run OK.

morale: if you are not able to write on a write-permitted diskette, reboot the kernel

-- 
Karel Kulhavy                     http://atrey.karlin.mff.cuni.cz/~clock
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