Howto: Reinstall Grub using Ubuntu Live CD

I recently installed Fedora 12 on my desktop alongside Ubuntu Karmic and Windows 7, however doing so I overwrite my grub which meant my Ubuntu system was hidden. To fix this is pretty simple..
Insert your Ubuntu 9.10 Live CD
Click “Try Ubuntu without any changes to your computer”
Once loaded click Applications > Accessories > Terminal
sudo fdisk -l That’s an L (not caps)

This displays all partitions on your system, in my case the installation of my Ubuntu system was /dev/sda5 so replace this for yours in the rest of the code.
sudo mount /dev/sda5 /mnt
sudo grub-install –root-directory=/mnt/ /dev/sda
If all goes successfully you should be done, try rebooting and see if your Ubuntu shows up.