mint 20 efi boot partition quit booting

[geek at uniserve.com]

On Thu, 16 Jul 2020 14:09:42 +0200
Liam Proven <lproven at gmail.com> wrote:

 > To prevent future power management issues, the first thing I'd 
suggest
 > is to check that the firmware is current, and if not, update it.
 > (Google for how. I can't recommend here because I do not know the
 > exact model number.)

this turned out to be the issue. Samsung has not made provision for a
user upgradable BIOS so I went carefully through the settings and 
there
was a switch to PREVENT UEFI booting. Toggled it and all is good.

Thanks for answers.

Dave