On 22/06/2025 at 01:24, Alex. I. TRIPCEA wrote:
If I choose firmware UEFI x86_64: /usr/share/OVMF/OVMF_CODE_4M.secboot.fd at installation, then after installation, the system boot without problems. if, instead, I leave the default value - UEFI - then after instalation the system remains at grub prompt.
Did you check secure boot status with both setups ?You can just boot the installation ISO, press "c" at GRUB menu to enter GRUB prompt, run the command "set" and check if "shim_lock=y" is present in the output.
According to /usr/share/doc/ovmf/README.Debian, OVMF_CODE_4M.secboot.fd supports secure boot but has it disabled by default, without any keys. OVMF_CODE_4M.ms.fd has secure boot enabled with Microsoft keys by default.