[server] Cannot boot Ubuntu 20.04 server after mobo reset

[server] Cannot boot Ubuntu 20.04 server after mobo reset

After a PSU failure and an unfortunate motherboard reset, my Ubuntu 20.04 server will not boot. Grub error, UIID not found. I have booted with liveDisc to run Boot-repair. I get the


GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again.

What should I do to solve this? Full boot-repair report: http://paste.ubuntu.com/p/BF3kgM5zdn/.

I have tried gparted, and created a partition (2MB, unformatted), but no way of settings flags for that one for some reason. The dev/sdc is almost full as well – is it safe to Resize/Move using gparted to make some space for new partitions?

(I see that there are lots of posts with similar issues, but frankly I don’t understand the answers to them. Something about installing in UEFI-GPT mode – what is that?

/Grateful for any support


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