So I backed up everything and I want a fresh copy of windows 7 on my pc. I started the setup, and I pressed the Format button on my main partition. It only took a second... and it said it was formatted. From reformatting my pc's all my life it usually takes at least 15 minutes to reformat my hard disk. So my question is did this really reformat my pc during installation or did i need to delete the partition or something else to actually reformat it?