Quote Originally Posted by Arthur View Post
If you want to do it quicker (but just as thorough), try PartEd Magic's Erase Disk feature...

Guide Secure Erase With bootable CD/USB Linux.. Point and Click Method

By using the built-in secure erase function of each HDD, I managed to wipe 5 x 2TB HDDs in less than a day.
Yes I did a few 250gb ones with this, worked a little quicker.