Erase/Delete/Wipe Hard drive data with HDShredder
It is always advisable to securely erase or delete your private and confidential data, before selling out your Hard disks or disposing them.
HDShredder comes as a self-booting application which can even run without a working operating system. You can easily create a bootable CD/DVD on Windows to use it.
Also See: Disk Wipe – Portable tool to remove data permanently from HDD & USB devices