How to get rid of password on hard-drive

Alex Uhryn

Estimable
Mar 29, 2014
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4,510
I bought a laptop off a friend couple months ago which had a password protected hard drive, and he told me the password. I'm looking to resell the laptop to buy a phone, so how would I remove the password on the laptop
It's a HP Mini (sorry don't know exact model)
WD Black hard drive and Linux OS (soon to be replaced with Windows 7)