Did you have the experience that when you plug in your USB drive to the PC, it doesn’t get detected, or windows give some error, and perhaps the drive doesn’t seem to be spinning up at all? I just did, in fact it happened to 2 of my old drives. A 80GB and a 120GB which I haven’t used for a couple of years.
I thought that they were old and were failing, or already had failed. Turned out to be otherwise!! It was the USB cable I was using. The cable was meant for those drives, but due to the age and the humidity of Singapore, the contact points of the connectors had some level of corrosion. Interestingly, it’s bad enough to not deliver enough power to spin up the drives and to cause unusual behaviour. Once I switch to a good cable, the drives spin into full life!!
So, lesson learnt, if your USB drive seems not to be working, try and change the cable first.