Boot loader problem after addiing SCSI disk

[Ed Wilts]

On Thu, Jun 08, 2006 at 08:50:08AM +0100, Chiu, PCM (Peter) wrote:
> I have hit a problem in booting up a RH 9 box after adding a SCSI disk.
> 
> The boot process pauses after displaying:
> 
>   GRUB Loading stage 1.5
>   GRUB Loading, please wait...
> 
> The machine does not show any response, not even
> Control-Alternate-Delete.
> 
> I boot off RH9 CD and started off Linux rescue mode.
> 
> I can see all the existing scsi disks as well as the new one -
> though somehow, the new one becomes sda, and the old sda becomes sdb,
> and the old sdb becomes sdc.
> 
> I tried to reset the MBR with grub-install /dev/sdb
> but same result.
> 
> I have also tried replacing all references on hd0,0 to be hd1,0
> in grub.conf, and reapply grub-install /dev/sdb, still no joy.
> 
> Any idea anyone?

Do you have labels on your boot volumes?  grub should point to the
label.  e.g.
title Tao Linux (2.6.9-34.0.1.EL)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-34.0.1.EL ro root=LABEL=/1 norhgb quiet
        initrd /initrd-2.6.9-34.0.1.EL.img

So make sure you've got both the correct root and LABEL options
correctly specified.

        .../Ed

-- 
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts at ewilts.org
Member #1, Red Hat Community Ambassador Program