I know the answer already. But what do you think? I've have an external HDD for the past 4 years. It's a pleasant 60gb to go alongside my other, and newer HDD. It failed on me about 18 months ago resulting in a format. And just last week, after a marathon video rendering session it packed in again. I've tried repairing disk but I get a "B-node tree error" or something. So I tried DiskWarrior at college. Oh dear! It can see the drive but can't rebuild it. This HDD has failed twice now. It's been put through a lot. Sometimes it doesn't even appear in Disk Utility. Does it sound dead to you? I think it's time for a burial.