NShred

Definitively erase and destroy any Windows folder or file using low level overwrite and standard procedures such as US Department of Defense DOD 5220.22-M (5 overwrites ) or Gutmann (32 overwrites). With NShred you can eliminate confidential information and data from PC drives. Name, size, and contents of erased file can never be recovered, by any software or hardware means. Unused disk space may be shredded, too.