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SubjectRe: 160gb maxtor with promise ultra 100
On Thu, 7 Mar 2002, Holger Lubitz wrote:

> recently i installed two 160gb maxtor drives. using the latest ac-kernel
> (.19-pre2-ac3), they were detected correctly. however, the promise ultra
> 100 (detected as pdc 20267) hangs at the partition check. last thing it
> prints is "hde:" and it's dead. however, if i connect the drives to the
> onboard piix3 ide, they are detected correctly, survive the partition
> check, and _do_ work as 160gb drives, but slow (piix3 only supports
> mdma2, no udma). if i boot the latest non-ac-kernel available on the
> machine (which is the not so recent 2.4.14) the drives are misdetected
> as only 137gb (of course, no 48 bit support) but otherwise the machine
> works, even with the drives connected to the promise.
> so the situation is - either i use the full 160 gb, but only mdma2 data
> transfer. or i use udma 100, but only 137 gb of the drives. i can't seem
> to have both.
> i am out of ideas what might be causing this. of course i could just
> throw the promise out and leave the drives connected to the on board
> controller, but... other ideas?

Check promise's website for a bios update for the controller. the earlier
versions of the ultra100 don't have 48 bit lba support, if i recall

Kelsey Hudson
Associate Software Engineer
Compendium Technologies, Inc (619) 725-0771
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