I bought an Xbox 360 Arcade version a while ago and today I got a 120GB drive from a shop that had a closedown sale. I put the drive on the side as per the picture on the back side of the drive. When I go to settings and look at memory, it only finds the built in memory chip, not the harddrive. Am I doing it correct? I have almost never used my Xbox so I'm not sure if there's anything more to it. I don't think I fitted the drive wrong either, it seems pretty much impossible to do it wrong. The box came with only the drive, it doesn't have any transfer kit or the likes.