Ubuntu Boot Repair

Boot-Repair is a small graphical tool to restore access to Ubuntu and other OS (Windows..). It is a free software, licensed under GNU-GPL. Boot-Repair is not officially supported by Canonical, use it at your own risks.

Installing :

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update && sudo apt-get install -y boot-repair && boot-repair

Boot-Repair can be installed & used from any Ubuntu session (normal session, or live-CD, or live-USB). PPA packages are available for Ubuntu 10.04, 10.10, 11.04, 11.10 and 12.04.