Hello everyone, I am having to change the hard drive on my 2011 Macbook Pro and I am trying to save all my files before I give it in. They said I should do it manually rather than use Time Machine, with the hard drive failing and what not. So, I bought a Seagate Back up Plus for Macs Portable Drive, with 1TB of storage, and everything is going great, except I can't upload my videos. It had no problem with photobooth videos and videos taken with my mother's camera, but not those with mine. They are a MP4 format and filmed with a Sony camera (I mention this because in the past I have found it impossible to use them with iMovie). I don't think they are particularly heavy - something like 49 Mo for a one-minute video. I uploaded the iPhoto Library as a whole, and it appeared fine on my husband's computer, but the videos in it don't show. It says it is because it doesn't have the original file. I have tried changing the format of the hard drive but it appears to have changed absolutely nothing except erase everything I had already put on there. These are videos of my son growing up; I would really, really hate to lose them. If anybody can think of a solution, that would be great! Thank you!!!