I had a 19 gb windows partition on my mac. I had installed vista to play some games, but after finding most of them not worth playing I got rid of them and tried to install cod4. Cod 4 requires 8 gb and because I had 7, I had to compromise. Vista comes with a plethora of useless crap that you don't need so i proceeded to get rid of those. I went inside the disk to remove a game folder, but avoided everything else that seemed important. In the end, I decided I should just get rid of windows altogether. I rebooted into OS X and found that getting rid of windows was harder than I thought. I did this with the latest OS X software update. Having that extra partition doesn't affect OS X performance at all, but I could really use the extra 20 gb of hard drive space. Please help.