So I had Windows 8 and and long story short it wouldn't start up and I installed Linux as it seemed to be the only way to completely remove Windows 8 and still partially he able to use my desktop. When I went to install Windows 7 using a disc it just says that my Disc 0 Partition 1(my 1 TB Hardrive) can't have Windows 7 installed on it because it says it must be installed to a partition formatted as NTFS. So my question is how do I uninstall ubuntu, reformat the hard drive, and install Windows 7?