On Sun, Jun 20, 1999 at 07:00:27PM +0300, Antti Kantee wrote:
> I can confirm the exact same problem on both a Pentium and a PentiumII
> 1.4 and 1.4C with a disk of the following kind:
> 
> wd2 at pciide0 channel 0 drive 1: <ST51080A>
> wd2: drive supports 32-sector pio transfers, lba addressing                  
> wd2: 1033MB, 2100 cyl, 16 head, 63 sec, 512 bytes/sect x 2116800 sectors     
> wd2: 32-bits data port
> wd2: drive supports PIO mode 4, DMA mode 2
> 
> I've been meaning to investigate this problem for a while already, but
> can't do anything since I've loaned the disk a friend of mine (sneaky,
> eh?).
> 
> I've noticed that this problem does not occur with wdc (or perhaps I've
> just been in luck), so using wdc instead of pciide should help in using
> the disk until the problem gets fixed.

When you use wdc instead of pciide, you don't use DMA. This is the difference.
What else did you have on the same IDE bus ? 

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--