Here's the situation. My files were backing up for about a day, had 75gb of 100gb done, and then my power went out. It cancelled out, and then when it came back on I tried to resume it. It started to backup 25gb, which I'm assuming is just the last 25gb that it had to do. Anyway, it did that for a while then stopped, and now when I try to backup, it says "Time Machine Error: The backup disk image could not be mounted." What does this mean? And how do I backup the rest of my stuff? Do I have to start over? And is there a way to make it transfer faster? I mean, there's no way to directly connect it to your computer, is there? Also, in the Time Machine settings thing, it says "Available: 839.8GB of 929.5GB Does that mean it has 839gb of my 929gb backed up? What happened to the other 71gb? I just want my stuff to be backed up, why is this so complicated?