Grub with2 disks. How to install on the 2 disks?

[Paul Howarth]

Aleksandar Milivojevic wrote:
> Jean Maupertuis wrote:
> 
>> I have 2 disks one IDE with Windows XP one SATA (not raid) with Fedora 
>> core3.
>> Grub is installed  on the mbr of the IDE disk (windows XP).
>> The problem is that i want to use grub to boot fedora  even if the IDE 
>> disk become unavailable.
>> How to do that?  With a grub on the mbr of the  Sata drive  but with 
>> what in the grub.conf?
>> With a diskette but one more times  with what in the grub.conf?
>> Here my actual grub.conf
>> default=0
>> timeout=5
>> splashimage=(hd1,0)/boot/grub/splash.xpm.gz
>> hiddenmenu
>> title Fedora Core (2.6.9-1.667)
>> root (hd1,0)
>> kernel /boot/vmlinuz-2.6.9-1.667 ro root=LABEL=/1 rhgb quiet
>> initrd /boot/initrd-2.6.9-1.667.img
>> title Windows XP
>> rootnoverify (hd0,0)
>> chainloader +1
>>
>> Thanks in advance.
> 
> 
> I'm not 100% sure, so this might make your system unbootable.  Check 
> info pages for Grub (type "info grub" on command line), and understand 
> what this commands will actually do.  You need somethine like this (two 
> install commands):
> 
> # grub
> 
> install --stage2=/boot/grub/stage2 (hd1,0)/boot/grub/stage1 (hd0) \
>         (hd1,0)/boot/grub/stage2 p (hd1,0)/boot/grub/grub.conf
> 
> install --stage2=/boot/grub/stage2 (hd1,0)/boot/grub/stage1 (hd1) \
>         (hd1,0)/boot/grub/stage2 p (hd1,0)/boot/grub/grub.conf
> 
> I'm not 100% sure if you can use "\" for line continuation.  My advice, 
> don't experiment, type each install line as single line (in which case, 
> you'd ommit "\" character).
> 
> The first install command would install Grub into MBR of first drive 
> (you can probably skip it, since you already have it).  Second line 
> would do the same thing for second disk.

You might need to use different grub.conf files for each install; if the 
IDE drive "goes", the SATA drive will presumably become (hd0) and so all 
the references to (hd1) in the grub.conf file will be referring to a 
non-existent drive.

Paul.