Microsoft treated a lot of geeks and technies with a Release Candidate (RC) of Windows 7. By the time the official Windows 7 came out, a lot of us learned that we couldn’t upgrade to the actual Win7 and would have to reformat our computers to do so.

Fortunately, my friends over at How-To Geek figured it out. You basically just copy the entire disk to your hard drive, edit a configuration file, and then run the setup wizard.

For a step by step, check here.