This does a great job of getting everything off the drive, but he was still faced with the EFI PIN lock protection when he tried to put it back into the Mac. You used to be able to clear the NVRAM ...

BIOS and UEFI differ in age, interface, and functionality, with UEFI supporting mouse navigation and networking. BIOS uses MBR, UEFI uses GPT, and BIOS works in 16-bit mode while UEFI can operate ...