jefboyardee said:
(a) Grub no longer appears so I can't boot to my Linux Mint, and (b) reinstalling my beloved Rollback RX on my c: (Win7) drive makes the Win10 loader boot loop, trying to fix the problem, until I uninstall it. Neither of those surprise me and I plan to delve into them later.
Well, it's later now and I almost fixed (a). I installed Win10 then used Paragon to restore the front end:
I think I chose to restore the 'Basic MBR Hard Disk,' but booting from the CD gave me different descriptions. Then, Grub actually came up and then, if I chose Windows, the Win10 chooser between 10 and 7 came up.
As long as I chose either flavor of Windows, it behaved. Then I chose my Mint and it was fine too. But, and that's a big but, when I rebooted, it just froze at the Win10 blue window logo.
I started it all over and the same thing happened, so it appears that the Win10 starter smelled a rat when I chose Mint that one time and would never behave after that.
Giving up there, I never dared to try my beloved Rollback in the boot. I now have that, Win7 and Mint running as per usual, but along with the Win10 files in their own now-unused NTFS partition.