I have a Seagate external hard drive that just stopped working one day (made a lot of clicks then disappeared from my laptop's desktop). When I plug it in to my PC or my Mac, it just makes the clicking sound and then nothing happens. It isn't recognized anywhere. It is still under warranty so I am sending it back to Seagate. However, I'd like to format it before doing so. How would I do this without it being recognized with any computer? The data on the drive isn't that valuable, but let's just say there are some mp3s that I might not be able to prove that they were purchased legitimately. I don't want some crappy songs to come back and bite me in the rear end.