How do I delete everything off my hdd including Windows 10?

[John_445]

Hi, I want to completely start new with my hdd I'm thinking it got a virus so I just want it completely gone including Windows 10. Thanks everyone

 

[SkyNetRising]

Boot from windows install media, go to command prompt
and use diskpart to clean the drive.

http://www.sevenforums.com/tutorials/52129-disk-clean-clean-all-diskpart-command.html

 

[basroil]

Just reformat during a fresh Win 10 install, it's easy, quick, and 100% effective