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SubjectRe: Can't set UltraDMA mode 2 on Quantum Fireball SE
On Sat, 28 Feb 1998, mlord wrote:
> mharris@ican.net wrote:
> >
> > I can't set UDMA on my fireball, moreso, I can't set ANY DMA at
> > all on any drives.
> >
> > I'm using hdparm 3.3, kernel 2.0.33.
>
> When in doubt, try a newer kernel. 2.1.88 or newer are fairly current.
>
> UDMA is guaranteed to be UNRELIABLE with 2.0.xx kernels.
> --
> mlord@pobox.com
> The Linux IDE guy

What kind of symptoms can one expect w UDMA on a 2.0.xx kernel like
2.0.29?...

I have a couple of them, a 5G and a 3.3G, both new Maxtor's.

The 5 (>10K cyls) seems useless since simple copies to it couldn't be
read. So its in storage till I upgrade the mb as its cyl count exceeds
the mb's max. However, since linux doesnt use the bios I expected it to
work... surprise. (mb is a micronics M54HI+ w 8300(?) cyl limit)

The 3.3 (>6k cyls) is ok, up to about cylinder 4600(?), which is
where mke2fs failed making a new partn. The rest of the 3.3, cyl 0 to
4599, is fine and services both Linux and NT4 just great.

Does this seem consistant w "UNRELIABLE"?

-----------------------------------------------------------------
John Heil
South Coast Software
1-714-774-6952
kerndev@scsoftware.tea-house.com
johnhscs@scsoftware.tea-house.com
-----------------------------------------------------------------


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