Grub Question

I currently have 11.1 installed on my laptop.

Want to make a dual boot install of 11.2 on the second hard drive.

I want a simple way to revert back to 11.1.

My confusion is how the new install of 11.2 on the second hard drive handles grub. I assume the new install uses /boot/grub/menu.lst on sda, my primary hard drive?

My plan is to make a backup of /boot/grub/menu.lst on sda

Install 11.2 on sdb formatting sdb ext4

If I want to revert to 11.1 then boot to 11.1 and cp my-backup-of-menu.lst back to /boot/grub/menu.lst on sda

reboot and reformat sdb back to ext3

Will this get me back to my 11.1 OK?

Just don’t write a bootloader. Then manually add an entry to 11.1 to boot 11.2

Thanks caf

What would that entry look like?

64 bit install, if that matters

Wouldn’t the 11.2 install need to boot to sdb to complete the install?

When the install completes it will reboot - sort of - I think it will boot up but if it doesn’t don’t worry. When you do reboot proper you’ll be back at 11.1

From 11.1 you add something like this:

#Don't change this comment - YaST2 identifier: Original name: SUSE 11.2# 
title openSUSE 11.2
root (hd0,8) 
configfile /boot/grub/menu.lst

But you can do via YaST
See swerdna’s: Linux HOWTOs and Tutorials: Suse Linux 10.0, 10.1 openSUSE 10.2, 10.3, 11.0, 11.1

Of course super grub disk will boot it regardless

Thanks caf this sounds much simpler using Swerdena’s tut on using the 11.1 install disk to re-install the 11.1 boot loader