update: my initrd has the vmd module, I don't even see the boot menu. Tried to re-install with re-formatting UFI partition - now it's black screen and fall-back to startup device menu. It doesn't even try to detect bootloader I think there are 2 problems: 1. System doesn't boot from EFI patition (which is strange as windows 11 was booting just fine from it) 2. Initrd doesn't assemble the fake raid. Could it be missing some kind of scripts for running mdadm to assemble the fake raid?