I have a PC with Windows 7 Ultimate and Ubuntu 10.04 with GRUB as boot manager.
Now I would like to install Ubuntu 12.10 along with these operating systems. I prefer Wubi, as it seems easy to install Ubuntu without harming the other OS.
Do I need to back up all my files? Or can I switch to the new version of Ubuntu/Windows 7/Ubuntu 10.04 from GRUB?