SeaTools is a clever little freeware utility which will diagnose any problems with your hard drives, internal or external. It will also fix some of those problems if you are using Seagate or Maxtor disks.
The software is pretty easy to use. Just select the drive you want to test (or all of them) and choose short test to get an overview of whether there are problems). If there are you can then select the long test which will attempt the fix on Maxtor and Seagate disks. That’s it. Rather useful, and available for free download in Windows or DOS versions.
SeaTools is a comprehensive, easy-to-use diagnostic tool that helps you quickly determine the condition of the disk drive in your external hard drive, desktop or laptop computer. It includes several tests that will examine the physical media on your Seagate or Maxtor disk drive and any other non-Seagate disk drive.