thanks kenrivers, I have moved the most important files to flash drives and so what is left is not important and yes the drive (iomega hdd ) was being used as the back up for the mac. I was wondering if I can if I dump every thing off the iomega can I still use it for a back up. but I dont see any way to delete every thing off of it unless I do it piece by piece. which is long and so time consuming . it did however last for 6 years.