date: None author(s): None

repair grub with live CD

Using your Ubuntu Live CD boot into the system. Once running, open a terminal and type or copy and paste this:

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

then

sudo apt-get install -y boot-repair && boot-repair

you will download a repair tool

enter image description here

To use the tool launch Boot-Repair from either :

the dash (Unity) System->Administration->Boot-Repair menu (Gnome)

by typing 'boot-repair' in a terminal

Then try "Recommended repair" button. When repair is finished, reboot and check if you recovered access to your OSs.

Tech notes