grub not showing ubuntu partition

[Tom H]

On Thu, Sep 9, 2010 at 8:27 AM, Tanmoy Chatterjee <tachchot007 at gmail.com> wrote:
> My hard disk partition is as following -
> /dev/sda1 - ext3 - ubuntu installed here
> /dev/sda3 - ext4 - /boot for Fedora13
> /dev/sda4 - ext4 - remaining partition of Fedora13(/, /home, /var )
> /dev/sda2 - extended - created when I installed Ubuntu 9.04
> /dev/sda5 - linux-swap - created with ubuntu installation

> To Tom H
> Thank you very much for your suggestion - kindly help me with the cli
> solution.

Just remembered that I never replied to the above.

I've never used Fedora's grub1 to boot Ubuntu but this should work.

Booted into F13, run "mount /dev/sda1 /mnt" followed by "ls -l /mnt/boot".

You will have the filenames of your Ubuntu vmlinuz and initrd files.

Run "blkid -c /dev/null /dev/sda1".

You will have the UUID of sda1.

Edit as root "/etc/grub.conf" (it is a symlink to /boot/grub/grub.conf" and add:

title Ubuntu 10.04
root hd(0,0)
kernel /boot/vmlinuz_from_ls root=UUID=uuid_from_blkid ro
initrd /boot/initrd.img_from_ls

If "root=UUID=..." doesn't work, try
"root=/dev/disk/by-uuid/uuid_from_blkid" or "root=/dev/sda1"