Re: switching root fs '/' to boot from RAID1 with grub

[berk walker <berk@panix.com>]

H. Peter Anvin wrote:
> Doug Ledford wrote:
>>
>> device /dev/sda (hd0)
>> root (hd0,0)
>> install --stage2=/boot/grub/stage2 /boot/grub/stage1 (hd0) 
>> /boot/grub/e2fs_stage1_5 p /boot/grub/stage2 /boot/grub/menu.lst
>> device /dev/hdc (hd0)
>> root (hd0,0)
>> install --stage2=/boot/grub/stage2 /boot/grub/stage1 (hd0) 
>> /boot/grub/e2fs_stage1_5 p /boot/grub/stage2 /boot/grub/menu.lst
>>
>> That will install grub on the master boot record of hdc and sda, and in
>> both cases grub will look to whatever drive it is running on for the
>> files to boot instead of going to a specific drive.
>>
>
> No, it won't... it'll look for the first drive in the system (BIOS 
> drive 80h).  This means that if the BIOS can see the bad drive, but it 
> doesn't work, you're still screwed.
>
>     -hpa
> -
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Depends how "bad" the drive is.  Just to align the thread on this -  If 
the boot sector is bad - the bios on newer boxes will skip to the next 
one.  But if it is "good", and you boot into garbage - - could be 
Windows.. does it crash?

b