Re: Boot parameter idebus=xx - is it safe to change?
From: nick (n_at_csdfdasdsfsdsdfsd.com)
Date: 03/15/04
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Date: Mon, 15 Mar 2004 00:13:42 GMT
On Sun, 14 Mar 2004 21:23:46 +0000, Robert S wrote:
> I have a DFI K6BV3+/66 motherboard which supports ATA/66 hard drives.
> When I boot up I get the following message:
>
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
>
> Is it safe to override the idebus setting with "idebus=66"?
>
> From my reading on Google, some people seem to say that it is unsafe.
>
> How can I check that my HD is using the ATA/66 setting?
>
> Is it necessary to use "ide0=ata66" (as one person suggested)?
>
> BTW, I use Slackware 9.1 + kernel 2.4.25.
>
> TIA, Robert.
Don't mess with that. You probably aren't using PIO, you are using DMA.
Look at hdparm -I /dev/hda (as root) and see what UDMA mode is marked, you
should be using UDMA4 which is 66mhz
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