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- Boot the computer using the Multiboot USB by hitting F12 on startup and selecting the USB drive.
- Once in the Main Menu, Select system tools -> Parted Magic. (Note: In case of need Parted Magic is also available through Hiren's Boot CD as Linux based rescue environment).
- Once parted magic boots up, open Disk Eraser.
- Use the shred or dd methods for a quick wipe or nwipe for a more secure wipe (similar to DBAN but takes MUCH longer).
- Choose the hard drive to be wiped (The USB can be disconnected once at this stage so as to not accidentally wipe it).
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Using Windows Installer with USB boot
This method uses a USB that is used to install Windows. However, we just want the wiping/formatting capability this method provides, i.e.: AVOID INSTALLING ANYTHING.
- Boot the computer using the USB by hitting f12 immediately after start up and selecting USB device.
- Press any key when prompted to avoid booting into the OS
- Once the Windows Setup window appears, click Next and Install Now.
- After accepting the terms, choose Custom Install
- Delete all Drive 0 partitions and do NOT click Next
- Exit Windows Setup to cancel installation
- If Windows Setup window shows up again, force shut down, remove USB, turn on again, and you should see that there is no boot device. Force shut down again and you are done.