Oh my flipping good grief.
Took all of 2 seconds to change the date, reinstall the 17th time and 3rd type of install, after mucking with grub-repair, etc, etc, etc, etc, etc.
That was all it was the whole time...
So not really prox mox related to begin with, and apparently unrelated to the drive itself. I guess the 2nd and 3rd systems I got for some reason had the same 2047 year, and although I noticed it, I frankly assumed the installation would override it.
It would have never crossed my mind that a fresh install would fail because of the BIOS date.
Thank you so much amcwhae!!!
(and the others who tried to help as well).
Here's the sad irony. I've had these 2 boxes for so long, and tried to boot them so many times, in two different homes, that now I have them both ready but can't find one of their power supplies...
ARGH! Must be at the other location and I forgot it there...
But hey, I'm finally out of the crapper.
THANKS!!!