Hi, I am trying to make a 100gb partition for bootcamp but it says "unable to partition" I have a 750gb HD and there are 500gb free so I'm not sure why it won't let me partition the space. I've read that I need to defrag but before I spend money on a defrag program for a HD that is not even close to full (or has ever been close to full) I'd like to get your opinions. Any help would be appreciated. OSX 10.8.3 Boot Camp Assistant: 5.0.2 Trying to install win7. Thanks guys/gals!