FOLLOW-UP: EFI MacBook Pro Firmware Issue SOLVED (for me, at least)

[Zoidberg]

Indeed, that's how I did it -- I cloned the internal drive to the new drive (which was in an external case) via SuperDuper. I then installed the new drive in the MBP, and put the old internal in an external case (which my wife uses as her backup drive).

My two external backup drives are both the products of cloning via SuperDuper. I can't say I've experienced a lot of system oddities; still and all, I'm in the right kind o' partition now.

Thanks for shining the flashlight on that GGD; that appears to solve the case.