I also have spent a frustrating week with UDMA problems including a
totally unreadable disk (corrupted superblock).
With Mandrake 7.0 and a UDMA 33 motherboard HDPARM reported 16MB/s with
my WD205AA now with 7.1 this is down to less than 5MB/s. With the drive
on my UDMA66 motherboard this drops to 3.5MB/s If I use DMA etc. I get a
corrupted superblock. I cut the speed of the bus by 5% and that seems to
have stopped the corruption.
If you run hdparm -t /dev/hda with dma set there is a stream of seek and
crc errors until the system resets the controller and disables dma.
My question is what is your processor and motherboard. I have AMD 400
and 500s and DFI P5BV3+ and K6XV3+/66 mbs.
> Subject: Re: [expert] UDMA66 problem
> Date: Wed, 28 Jun 2000 10:01:59 -0500
> From: "Norvell Spearman" <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
>
> In what way could the hard drive not be up to spec? The original post said
> the problem didn't exist with Mandrake 7.0.
>
> Not trying to butt in, but I also have an IDE device which did work with
> 7.0 but does not with 7.1.
>
> ---Norvell Spearman
>
> John Aldrich wrote:
> >
> > On Wed, 28 Jun 2000, you wrote:
> > > Hi,
> > >
> > > I've got a WD136BA hard disk on my hpt366 controller. If I try to use
> > > DMA for disk access, my system freezes. This problem didn't exist with
> > > Mandrake 7.0, but it appeared when I installed 7.1. I tried to upgrade
> > > my bios. Nothing changed. After that, I compiled another kernel
> > > (2.3.45). Same problem. I compiled 2.2.15 and 2.3.45 in 386 code
> instead
> > > of 586. Always the same problem.
> > >
> > Probably due to the hard drive not being up to spec.
> > John
>
> ----------------------------------------------------------------
Dave Cotton
Linux Autrement
Avignon France
+33 (0)4 90 16 07 89
