Well … Regarding my UEFI/Boot issue
I did some EFI settings in the Bios, under Pcie …
And forced the Secure boot “On”.
Then i had to “Instal/deploy” the Bios default EFI keys.
I had no luck in booting from the previous installed Deb12, but a reinstall w. UEFI active , made it bootable.
Now i’m back to the functionality i had before the BMC & Bios updates.
Next … Remove the M2-Sata drive , and install a NVME (To free up the 6’th sata channel , for my 6’th drive) … Then install DEB12 again to see if it will boot from the NVME.
I’ll order a Tosh-N300 8TB as my 6’th drive (tomorrow) , preparing to (at some time) phase out the - Old 5 x 4TB WD-RED-Plus installed - with all Tosh-N300 8TB’s