Lightning strike may have taken out a HDD!
Unable to find some place from which I can get service and a legit download of the necessary firmware (even from a questionable site), I've decided to order a couple of the smaller supported drives to get the box working.
I took a risk on some cheap RAM from China to upgrade my server.
The semi-annual release of Ubuntu is here today!
I finally got around to shopping for a new hard drive. It's been installed, and now my main workstation is functional again.
Yesterday I noticed my workstation wasn't on-line. When I went to check, it was sitting at a grub rescue prompt saying "unknown file system."