After I got my computer back, Windows decided it would have another try
at stopping me. It told me that my release of Win10 was no longer
receiving updates, and I should install a more recent release! If it is Win10, the original boot disk should work.
So Windows wouldn't let me use my computer until the upgrade was done.
(This was one -but only one- of the reasons why a certified Microsoft
tech switched to Linux.) The operation extended over two days, and left
me with a computer that wouldn't boot into anything except a Grub2
rescue prompt.
So, whereto next? I could have tried from the rescue prompt, so long as
I knew what I was doing. The System Rescue disk is very good for
routine repairs, but it too is for more informed users. The "Super Grub
Boot Disk" would have got me a working desktop, but that is all.
Then I learned about the (free) Boot Repair disk from SourceForge:
http://sourceforge.net/p/boot-repair-cd/home
It runs on Ubuntu, and is probably intended for Windows users, but the
Linux forums sing its praises as well. It starts automatically, and
invites me to download the latest version, not yet released.
Then I all that I had to do was sit back and give the disk its head. It
runs a series of tests to find my problem, then applies an appropriate
fix. This time, it reinstalled Grub2, giving me a standard Ubuntu boot
menu within minutes. It sent a log file to the Ubuntu pastebin.
MY VERDICT: It fills a gap not covered by the other resources I
mentioned, and is a worthwhile addition to my toolkit.
Doug.
--- MBSE BBS v1.0.7.22 (GNU/Linux-x86_64)
* Origin: Aioe.org NNTP Server (2:250/1@fidonet)