Re: [ILUG] hdparm and DMA "not permitted"

From: Paul Jakma (paulj at domain alphyra.ie)
Date: Tue 22 May 2001 - 18:56:56 IST


On Tue, 22 May 2001, Conor Daly wrote:

> I don't see ant "ATA" section, however, in the "Block Device" section,
> there's an "ALI M14xx support" option but the help for this lists

it's the IDE section.

>
> ALI M1439/1443/1445/1487/1489 chipsets
>
> While what I have here is an M5229 or is it the M1541 that's relevant

you need a 2.4 kernel.

> the 2.2.16 kernel. Must try out a 2.4 kernel and see what happens there.

aha...

still, your problem so far appears to be in the BIOS - ie the BIOS
doesn't like your disk. Linux will not use DMA if the BIOS disabled
it, cause there must be a reason the BIOS disabled it...

so perhaps it's your BIOS, or as others have suggested bad cable or
disk.

2.4 will automatically use DMA/UDMA/etc.. if it supports the
controller and it is safe to do so.

> Conor.

--paulj



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