Cannot convert mbr to gpt "cannot find os partition(s) for disk 0"

Hello there!
I am trying to convert my disk from mbr to gpt for secure boot and upgrade to win11, but I have an error saying "cannot find os partition(s) for disk 0" I know there are a lot of solutions of this issue, but I can't find my specific case - pictures. I have done reagentc /enable command but still doesn't work. (disk 0 is hdd for files etc and disk 1 is ssd for os if it matters.)