My iMac has currently 40 GB out of 500GB left. I have a 500GB external drive that has my Time Machine backup on. What options do I have? Most of my data is music & films. In Finder I like the way I can click Movies and there they all are. My only option I can think of is to use my external drive as a place to put more films etc. Then buy a 1TB external drive and then somehow get Time Machine to backup both disks. Would I lose the ability in Finder to click Movies and it show all Movies? I assume so because it can't look at 2 discs to find a folder I guess. Are there any other options available?