This probably doesn't apply to you, but...<P>If you really want to be sure that absolutely no one can recover data from your hard drive, you need to write random 1's and 0's to your hard drive at ...

As you probably know, formatting a hard drive doesn't completely erase the data on it. You must overwrite the data to securely destroy it, preferably multiple times. Windows 8 let's you do this with ...

Formatting a hard drive along with the install of a new OS is the best option. The vast majority of operating system installations provide a "format" option as part of the installation process.