My computer has been experiencing freezes so I was going to reinstall the OS on the primary HDD, but I don't know if I would have to format my 3TB Seagate Barracuda HDD in order to reinstall it to the primary HDD. I use the Barracuda as my media drive and I don't want to reinstall about a 1TB of media again. When these freezes occur, I can move my mouse, but nothing else responds and when the freeze stops, my Barracuda is missing and I have to do a hard boot. I guess i'm asking two questions really, 1) What is causing these freezes? 2) Would I have to format my Barracuda to reinstall it if I were to reinstall the OS on the primary?