sudo add-apt-repository ppa:n-muench/burg
sudo apt-get update
sudo apt-get install burg
During the installation, it should ask you to write the new boot loader to MBR. If you skip that step, you can later use the following command to update MBR of hd0:
sudo burg-install "(hd0)"
Source: https://help.ubuntu.com/community/Burg