So I'm trying to install Windows 7 and can't get the boot camp assistant to partition my drive. The drive in question is 500GB with over 200GB free space. I want a Windows partition of 35-40GB. On first attempt I kept getting the cannot move files error when trying to partition. I read up on the error online, and most people suggested issues with parallels or needing to use idefrag. I had parallels on my machine at one point, but am not sure if there are any problem folders still hiding somewhere. Any tips on that part? I ran idefrag overnight last night. When I booted the machine up this morning, I launched it again to verify that the disk was defraged. Boot camp still doesn't want to play. Any advice? I'm really trying to avoid a fresh install as much as possible here.