said Dr. Nikolaus Klepp:
| UEFI?
Ha! I fiddled around in the bios a little and some magical combination of
changes led the GRUB entry for Ubuntu 20.04-LTS on /dev/sdd1 to, um, take.
Booted that and it worked and I'm running on it now. (Checked via the
mount command.) Did an apt upgrade and fortunately a new kernel came in,
and the automagic update-grub now lists a Ubuntu 20.04-LTS on /dev/sda1.
So, in keeping with the time-honored Linux method of I dunno, I just did
some stuff and then it worked, it is now working, and I'm looking forward
to the magnificent increase in speed that I've heard so much about.
UEFI figured in there somewhere; the significant change was changing "UEFI
then Legacy" to "Legacy then UEFI" I think.
Thanks, everybody.
--
dep
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