Linux makes 30G WD disk confused about its identity

From: Dale Amon (amon@vnl.com)
Date: Sat Mar 25 2000 - 15:48:57 EST


Since there is an on going thread on 32G drives, I thought
it might be a good time to bring up a problem I've been
having with a 30G Western Digital IDE drive.

Using the manufacturers DOS boot application, the drive
info looks like this:

              C H S MB
Default 59598 16 63 30760
Currently 16383 16 63 8455
Rom BIOS 3740 255 63 30764

When I boot into Linux it sees the drive at the "current"
settings, which I believe are getting forced in when
I use fdisk to create the partition table (cfdisk can't
deal with it at all until I do this)

I've tried changing CHS in fdisk and it seems to take
them... but if I exit and restart the program, everything
is back to the values in the "Currently" line again. I
discussed this some weeks ago on linux-hardware and have
not progressed towards a solution yet.

Something, somewhere is forcing this drive to think it
is 8G instead of 30G. It ain't the BIOS, so it seems
to be driver related or perhaps a failing in fdisk.

I can kill the partition table, go into the DOS app
and reset the drive, but it goes right back as soon
as I boot.

The system in question is far from a phone line and
has no external connectivity, so updates are painful.
But it is running 2.2.14 kernel with debian potato dist
as of November 1999.

I tried a 2.3.x kernel as well and that didn't solve
the problem either, although I limited my tests because
I was getting some error messages that were worrisome
and this is not a system I wish to lose a file system
on!

------------------------------------------------------
Use Linux: A computer Dale Amon, CEO/MD
is a terrible thing Village Networking Ltd
to waste. Belfast, Northern Ireland
------------------------------------------------------

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This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 21:00:16 EST