Hey there!
I just upgrade my guix system to kernel 5.10.11, using guix pull and sudo guix system reconfigure /etc/config.scm. When I reboot the system, it say "no media present", and go to bios setup.
When I change from uefi to legacy, the system show what you can see in the picture.
I think my cpu board is gone, nothing about Guix System. But I need to be sure. Is there any clue of test? I had a pen drive guix system 1.1.0 and I can access the drive no problem. But I can't boot the system.
Obs: OMG I'm fat. 😱