If I have a HDD hooked up via FW, can I install apps to it, knowing that they won't be available when the HDD is not hooked up? I.e. I want to install my copy of Final Cut Pro suite to an external HDD that will be used just for video editing, which obviously uses a lot of space (FCP takes up 60gb just on its own, if I remember correctly). And when I'm not editing, I'll remove the HDD... Thoughts?