If they were willing to do that then why not just embed the functionality into the firmware of the Mac Pro? I think it's far simpler than that - this is such a

If they were willing to do that then why not just embed the functionality into the firmware of the Mac Pro? I think it's far simpler than that - this is such an infrequent issue it doesn't warrant engineering time beyond what they already support - using Apple Configurator on a second Mac to sign the drive to install it. This is likely a dictionary definition of "edge case" after all. Mac Pro's aren't exactly high volume computers (something that is normally touted with great enthusiasm on this site).