I have a 160 GB that just went out on me one day and now as I set it up as an external drive to recover the data it is not recognized by the o/s. It shows as a USB Device under Disk Drives in Hardware Management and also under certain recovery software it shows as 2.0 TB size. The file system does not show up either. I have tried a few recovery programs so far it either does not show or comes up as a 2.0 TB drive and when I scan it nothing comes up. Please help.