Qubes OS 4.2 upgrade black screen before LUKS encrypt after preboot stages done

[apparatus]

Check the topic that I linked:

@hyper

To install, I booted the installer with kernel parameter acpi=off. The installer gives an error about not being able to create the boot entry, but this can be fixed manually with a live CD as mentioned on UEFI troubleshooting | Qubes OS

You need to boot from some LiveCD or from Qubes OS installer in Rescue mode and add the EFI entry using efibootmgr:

BIOS Update That Will Break Boot

If you use uefi : get a qubes os media installation. boot to qubes os rescue mode. skip to shell. [shell] : efibootmgr -v -c -u -L "Qubes OS" -l /EFI/qubes/grubx64.efi -d /dev/nvme0n1 -p 1 reboot change -d <which drive?> and -p <which efi partition?>. if you want you can make sure first by issuing efibootmgr -v in dom0