so I've let them through ..

then there was an update to the Grub Boot Menu as well & that then froze up.
- after the machine was Hard Shutdown,, the tri-boot menu system was corrupted.

it did take a while of messing around, as the new grub2 boot menu, was not seeing any of the changes,
& even though I'd been using both the direct / not-recommended & also the correct way(s) to set the Boot Menu.
did manage to fix it, after an hour of messing about,and it seems that I've going to have to use MX Grub Loader,
for a while, anyway - - no biggie - - just have to get used to a different graphic on the boot screen.
- - didn't lose anything & that's all that matters.
