I am trying to load Windows 7 onto my macbook via boot camp, but when ever I select to start the partition, it almost instantly stops and a message pops up saying. "The disk cannot be partitioned because some files cannot be moved." Underneath that in smaller print it says. "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." Problem is that my hard drive is in os extended (journaled) format already >.< Please help as it's really annoying me.