I haven't been able to complete the first back-up. I have a 2 TB drive and a 3TB Time Capsule, but Time Machine shows the back-up size as 3.3 TB. I had to delete my original backup (I keep a separate offsite backup) so it had enough space to start, but it will never complete. When I try to restart the computer I just get a grey screen and have to hard reset. Anything I can do short of reinstalling Mavericks?