I got a 300 GB Seagate, and just installed it in the external enclosure I got. I think I did everything right. This is my first time dealing with a external HD, and external enclosure so is there something I'm missing? I'm just bein cautious just in case. And what would be the best way to back-up my files? Just copy it to my new HD? Thanks guys. [Update] I turned it on and the disk utility popped up. The computer said it didn't recognize it or something. There's no HD icon that shows up on my desktop. What do I do?