How to completely erase files, directories, or hard drives

Requires OS.

Windows:

Eraser – http://www.heidi.ie/node/6

Linux:

Use Secure-Delete Tools.

Reference: http://www.techthrob.com/tech/securedelete.php

Bootable CD. Erase a hard drive.

Use Darik’s Boot And Nuke.

1. Create the bootable CD.
   • Download the .iso file.
   • Burn it to a CD.  For example: use InfraRecorder.
2. Boot from the CD.
3. The program will detect any hard drives on the computer.
4. Select the hard drive you want to wipe.  Optionally change the method that is used to wipe the hard drive.
5. When ready, press F10 to start the process.