I bought a 500GB external last year and have been using it for time machine. Recently I added a bunch of movies to it to free up space on my MBP so i deleted all the time machine backups and stopped using it for that. I then looked at the info of the drive and noted that it says the capacity is only 399 GB. Now I know that capacity is always a bit lower than what is advertised, but also know that when I bought the drive capacity was at least 460-465. Any ideas on how to fix this, or more specifically how to fix it without deleting everything on the HD? Cause I have no place to put over 100 gigs of movies!