GRUB with IDE and SCSI disk
Gilboa Davara
gilboad at gmail.com
Thu Mar 23 12:53:21 UTC 2006
On Wed, 2006-03-22 at 23:29 -0500, Matthew Saltzman wrote:
> One of my systems has an IDE disk and a SCSI disk. I upgraded the IDE
> disk and I need to reinstall grub. /boot is in /dev/sda1, but the system
> boots off of /dev/hda.
>
> I've tried various things to install GRUB on the new /dev/hda, but
> everything results in a complaint during boot that
>
> Error 21: Selected disk does not exist.
>
> For example, in GRUB shell, I installed using:
>
> > root (hd1,0)
> > setup (hd0)
>
> The installation seems to work fine, but boot fails as above. I had this
> working before, but for my life I can't recall how I did it differently
> from this.
>
> What am I missing?
>
> Thanks.
>
I assume your CD is IDE based, right?
Where is the root partition located? Boot is on the SCSI drive right?
You problem seems to be very simple: You BIOS is configured to boot from
SCSI; however, when you boot from a CD, the IDE devices get enumerated
first, sending the IDE drive to hd0,0
Gilboa
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