Hi I have a question about moving files as my MacBook SSD fills up I want to move some of the bigger files onto my external HD, but I only have 1 that I use for backups, and I don't think it's working. I dragged some files onto the External HD, but it just copied them, it didn't actually move them off of my Mac SSD. Is this because I have this particular drive set up for Time Machine? I'm starting to think I need another external HD if I want to actually move the files off of my Mac. Any suggestions? Thanks!