Preboot auto-unlock and reboot

As an added benefit to saving passwords to a drive, on startup in the pre-boot environment, Opal Lock scans for password files stored on USB. If any are found, Opal Lock will notify the user that it will proceed to attempt unlocking all locked drives after 5 seconds unless the user cancels it. If allowed to proceed, Opal Lock will automatically attempt to unlock all drives using detected password files. If all locked drives are unlocked, then the system will reboot automatically.