It looks like only BIOS/legacy boot is working. I have tried this on two different Intel NUC's and the UEFI boot does not seem to work.
Reboot loop on one NUC, boots the second time on the other NUC, which falls back to legacy mode when UEFI fails.
This warning might have something to do with it:
I: final image - setting up the bootloader... grub-install: warning: EFI variables cannot be set on this system.
grub-install: warning: You will have to complete the GRUB setup manually.
First of all, great work on this tool!
It looks like only BIOS/legacy boot is working. I have tried this on two different Intel NUC's and the UEFI boot does not seem to work.
Reboot loop on one NUC, boots the second time on the other NUC, which falls back to legacy mode when UEFI fails.
This warning might have something to do with it: