Hello, about a year ago I bought a iomega eGo external hard drive because my MacBook was becoming overrun by files. When I first attached it to the computer, Apple asked if I would like to make it my time machine and I said yes thinking that it was good to back things up while I could. However, the 1 TB promised is now down to 315GB. I've heard that it's because of a huge influx of hidden files and I've attempted to delete them, but I haven't found a solution that's helped. I've taken the hard drive off as a time machine but it can still only hold 315GB which is frustrating considering how much I paid for the hard drive. Is there a way to somehow "unlock" the 685GB that could be still used instead of shelling out more money on another hard drive?