Ok, so I had Windows 7 and i installed Ubuntu, and was going along enjoying myself but then found no need for Ubuntu, I idiotically deleted the Ubuntu partition. and got the GRUB Rescue screen. SO i bought Windows 8.1 and I booted from the DVD Drive and installed windows, except I put windows 8.1 on the old formatted Ubuntu partition which had like 80GB. I did this so i could save all my files from windows 7. Now that iv'e got my files from windows 7. What would be the steps to safely Format the windows 7 partition. and give that unused space to the drive that windows 8 is using.