I have installed Ubuntu 12.04 (upgraded from 11.10) 32-bit and Windows-7 64-bit simultaneously in my computer. I want to install windows-8 but I haven't any backup of Ubuntu 12.04 to retrieve grub after installing windows. So, my question is :-
Is it possible to repair grub with different version of Ubuntu Live CD? If possible then how could I do that and how risky that process?