floppy device caching?

Kevin K. Sochacki (kksocha@erenj.com)
Tue, 24 Mar 1998 21:08:00 +0000


Hi all,

It seem that there is some sort of cache for the floppy device that is
preventing the ability to load an application from multiple diskettes.
The system is running RH5.0 2.0.32 w/most updates applied. RH4.2
2.0.29 does_not_ have the problem.

The symptom:
I have two 1.44 in cpio format.
DISK1 contains: file1 file2 file3
DISK2 contains: file4 file5 file6
when I use 'cpio -icvBmud </dev/fd0' w/DISK1 in the drive the content of
DISK1 is extracted. If I put DISK2 in the drive and issue the same
command the content of DISK1 is extracted. If I take DISK2 out and
issue the command w/NO disk in the drive the content of DISK1 is
extracted. If I put DISK2 back in and use device /dev/fd0H1440 (cpio
-icvBmud </dev/fd0H1440) the content of DISK2 is extracted. The only
way I was able to read the content of the current diskette and not the
content of previous diskette was to constently alternate between the
devices.

Is there something such as a kernel parameter that will disable the
floppy cache?

TIA
Kevin

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