The disk cannot be partitioned because some files cannot be moved.A much more helpful message would be:
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.
You've got some big file(s) I can't move. Find 'em (find ./ -size +100M) and get 'em off the disk, or just use iDefrag instead.No, actually this is what the message should read:
You need to move big_file.iso to another disk before Boot Camp setup can continue.
/mac | Apr 27, 2010