|SecretDrive: Keep Your Privacy|
This is done either using file shredder software, or by issuing a "secure delete" command, as opposed to a "delete" command from the operating system. File shredding usually involves overwriting a file multiple times.
Use wipe manager to securely delete files. Wipe manager implements Gutmann method. Devised by Peter Gutmann and Colin Plumb, it does so by writing a series of 35 patterns over the shredded region. To add files or folders, just drag files from windows explorer and drop on WipeManager. You also can use "Add file..." and "Add foder..." buttons. Specify number of rewrite passes and press "Wipe" button.