floppy drive problem
william at palfreman.com
Tue Apr 22 16:31:01 PDT 2003
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On Tue, 22 Apr 2003, Malcolm Kay wrote:
> Notice all Chris's commands address a ufs partition, and the errors come from
> fd0c -- again a ufs concept. The disk is not set up with ufs but FAT12 so
> these do not exist.
> His drive works OK under windows; it is possible but very unlikely there is
> a hardware problem.
> His problem will probably disappear if he uses a suitable device fd0 or
> fd0.1440 rather than fd0a.
I tried mounting an old msdos format disk using fd0, fd0a, fd0b, fd0d,
fd0f, fd0h, and they were all exactly the same and all worked - not
entirely surprising given that they all have the same major and minor
> This also applies in writing an image using dd, but here it might be
> advisable to use the sized device fd0.1440 or the traditional raw device
I thought rfd[0-1]* was deprecated? Anyway, it has identical
major/minor numbers to fd[0-1]* and it works identically for me too.
I suppose you could try using fd0.1440. I'm fairly sure it is simply
the default fd0 does anyway. It certainly works identically for me,
although the major/minor is different.
In general, I think it is a really big mistake not to assume hardware
failures with an elderly floppy drive, before digger around for an
obscure incompatibility. The 3.5" IBM floppy has been around a very long
time and are very well understood. Unless it is a very special type of
Chris has since said that the drive takes known good disks, and after
failing to read them, those disks are no longer readable. There is
probably a huge chink of crud on the read/write heads, and its wrecking
everything that get near it. That or similar seems to me to be the
overwhelmingly likely cause of the problem.
W. Palfreman. I'm looking for a job. Read my CV at:
Tel: 0771 355 0354 www.palfreman.com/william/cv-wfp2.html
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