So, I'm going to make this as clear and understandable as I can, so bear with me. My friend bought me a copy of Windows 7 Ultimate for my birthday, (I bought him an Xbox) and I decided yesterday would be the time to bootcamp my MacBook Pro 15 i7. So I start the partition process and Windows 7 sparks up like a charm. After an hour or two of using it, I decide I wanted to sell the copy to my dad, buy the OEM version, and have some spare cash. (I was still on my 30 day activation period.) So, I boot into OSX wrongly enter Disk Utility and remove my 100 gb partition. I assume all is well, and proceed with doing the internet. (lol) Well, I opened up my Finder and see that my once 386 gb of free space is down to 283 gb. This was followed by a loud WTF and a quick attempt to find the source. As you can probably tell, I couldn't find it. So I started up BootCamp to try and delete the partition from there, but no dice. It prompted me to choose a partition size, so I chose 100 gb again, but this time I was told that "The disk cannot be partitioned because some files cannot be moved. Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again." What to do? I would prefer not to drive 2 hours to my local Apple store. Thank you guys for the help!