Yesterday I did a migration assistant (MacBook Pro to MacPro)to get a music file from a friends computer and what i think happened is that I migrated his WHOLE system because now my hard drive has 4.3 GB left when before it was virtually empty because I use ext. hard drives. My question is WHERE are all these files because I dont see any new files (not even the music file that I intended on migrating) but my hard drive is filled up. And if possible, can I remove all the files at once since they all came at once? Help please!!