John Jenson - 2013-10-15

Bought a laptop used from a coworker and the harddrive has a password on it (knew it before I bought it). Already ordered an ssd to put in as the master drive but would like to use the 500gb drive in there now as a slave. Will this software erase everything on a locked harddrive including the mbr which is where I believe the password is encoded in? If so do I need to use any particular one of the wipe methods. Can anyone steer me in the right direction? Dell said they could remove the harddrive but it would cost me $129 so it would be cheaper just to buy another drive anyways.