On Tue, 2006-10-17 at 06:48 +0200, [EMAIL PROTECTED] wrote: > Andreas Glaeser wrote: > > > On Sun, 2006-10-15 at 18:17 +0200, [EMAIL PROTECTED] wrote: > >> Hi all, > >> I am running Debian Etch 2.6.15-1-686 on an Asus motherboard with an > >> AMD64 chip. Etch is running on /dev/hda. I wanted to try out the 64bit > >> kernel so I installed a second HD /dev/hdb and installed Sid amd64 from > >> scratch. I didn't want to get involved in chroot type stuff which is why > >> I did it this way. Both systems use grub but the MBR is pointing to > >> /dev/hdb for the menu.1st file. When I upgraded the kernel on the Etch > >> 686 system of course I had to copy the newly created menu.1st item from > >> Etch to the menu.1st file on Sid amd64 in order for it to show up on the > >> grub menu on bootup. That was ok for a while but now I'm getting disk > >> errors on /dev/hdb. I can still boot into Etch ok but I would like to > >> change things so that the MBR looks at /dev/hda instead of /dev/hdb. I > >> may have to replace the hdb drive if reformatting and reinstalling Sid > >> amd64 don't clear up the problems. > >> > >> Can someone tell me how to tell grub to ignore /dev/hdb and look at > >> /dev/hda for the bootup menu? > >> Thanks in advance for any advice. > >> Jonathan > >> > > Maybe ´grub-install --root-directory=/dev/hda /dev/hda´ has the desired > > effect. > > > > > > Regards > Thanks for that Andreas, > I'll give it a try and let you know if it works. I also created a grub boot > disk with stage2_eltorito on it. Would it be better to try it from there? > Cheers, > Jonathan > Dear Jonathan, as long as your System is still running and booting correctly there is probably no need to use a live CD for reinstalling Grub . But it is safer to make a backup of the MBR before giving it a try: dd if=/dev/hda of=/boot/mbr.hda bs=512 count=1 So if anything goes wrong it can be restored with something like: dd if=/mnt/hdax/boot/mbr.hda of=/dev/hda bs=512 count=1 I think an existing menu.lst -file is not touched by ´grub-install´. You can make a copy of menu.lst, too, or copy that from hdb in case.
Yours sincerely -- Andreas Glaeser <[EMAIL PROTECTED]> -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
