i have Ubuntu on my system but i want to change my OS is there anyway I can format the C drive from Bios ??
If you install Windows 7, then just change the 1st boot drive priority to cd/dvd & 2nd your hdd. then restart your pc.
After restarting your pc shows "press any key to boot from CD" when you press any key then windows 7 start to boot . and you choose custom install and delete your drive.
if you have any problem regarding this then please inform me.