So i built a rig a while ago and never bother to put any other OS on it beside windows 7 beta. So i was wondering if it was possible to simply upgrade or in a sense downgrade (windows 7 ultimate beta, to home premium). I think i remember seeing you couldn't. And i guess if now would i get all my programs onto the new OS. would 7 simply replace the beta on the harddrive or would it have to wipe the hard drive. maybe like partition for my used space and a separate for the OS. I feel pretty noobish even writing this. but i've never had to change OS before