On 20-11-2015 16:24, Jayesh Badwaik wrote: >> Because I'm talking about this [1] and not software based encryption. >> [1] https://en.wikipedia.org/wiki/Hardware-based_full_disk_encryption > Shouldn't BIOS take care of that? > Not really, BIOS is old and it doesn't know anything about OPAL drives. I don't know about UEFI machines but I suspect not many know about SEDs/OPAL either. On the other hand, you don't know what kind of treatment the BIOS would do to the password before sending it to the SED, one bios could send it plaintext, others could send key scancodes, you don't want to get anywhere near that kind of nonsense. This would mean that you might not be able to unlock the disk if you move it to another machine. -- Mauro Santos