I backed up the entire data of my mid-2011 MacBook Air onto a mac-formatted WD MyPassport EHD. 86 GB was the total, mirroring the Mac HD Flash Drive. After 2 hours of backing up, I went to look at the contents of the EHD. It has 86 GB of “back-up” and not a single movie which is what I really wanted to transfer in the first place.–I want to free up space to download more movies, all of which are on iTunes. Help?