CopyWipe is a free utility and is very ease to use. Besides copying contests it will help prevent confidential or private data from being recovered, by securely wiping the contents of a drive.
A number of options are provided for wiping (shredding), most of which exceed governmental standards (such as DoD 5220.22-M, NAVSO P-5239-26, etc.); this allows the user to choose an optimal balance between security and duration of the wiping operation.
A USB 2.0-to-IDE adapter, along with CopyWipe, provides a convenient method to create and maintain a complete hard drive mirrored backup.
Best of all, CopyWipe is now FREE and you can download it from here