How to Erase Everything on a Computer Hard Drive Securely

[@f14anytime93]

Grand! Well presented video. It worked.

[@dennisj9646]

Perfect! Thank You🙂

[@farzanefarzane]

thanks baro 🙏🙏🙏

[@youconduit]

excellent

[@keithwhite2986]

What commands could be used to verify there is no data remaining on a hard disk ?