8 Ways to Permanently Delete Data Without Leaving ANY Trace
Friedbeef's Tech —
... Darik’s Boot and Nuke ("DBAN") is a self-contained boot disk that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction. ...
How to Permanently Delete Data from Your Hard Drive
ReadWriteWeb —
... Another free open source program that runs on Windows, Darik's Boot and Nuke (DBAN) wipes the entire contents of every hard drive it finds on your machine when you run it, so be very careful. ...
A Violent Virus Cure
AppScout —
... A: It's never reasonable to throw out the drive because of a virus infestation. If you're frustrated enough to wipe everything and start fresh, you can do it without any special hardware. A product like the free DBAN (Darik's Boot And Nuke) will overwrite the entire disk multiple times, wiping out all data to military standards. You create a diskette or CD of DBAN on a clean system and boot the to-be-wiped system from it. It then thoroughly wipes the drive's data. ...

