I was about to schedule a backup task for Acronis but when the wizard started it presented me with 3 partitions, only 2 of which I know. Here is a screenshot of the wizard http://img368.imageshack.us/img Obviously the OS is on C: and the small 10GB drive D: is a recovery drive. However, I don't understand the uppermost partition, the FAT16 (Unlabeled) one which apparently has over 100MB allocated to it. What is this? I have manually deleted some .tib files from an ext HD with Explorer in the last few weeks (I was unaware that you shouldn't do this). Could the 100MB partition be something to do with that? If not, should I back it up too?