Impossible to boot on Qubes 4.1.2

[apparatus]

You shouldn’t rename files in /EFI/qubes/ directory, only in /EFI/BOOT/ directory.
Can you double check that you’re booting from correct drive? Check the boot order in BIOS.

Or you can add EFI boot entry with efibootmgr:

UEFI boot: no Qubes OS option

boot like before, and make sure your external ssd is /dev/sda (it could change, run lsblk first, if it’s still /dev/sda then no need to change command below, if it was /dev/sdb or /dev/sdc, change the /dev/sda below to /dev/sdb or /dev/sdc). mount /dev/sda2 /mnt mount /dev/sda1 /mnt/efi cp /mnt/efi/EFI/qubes/grubx64.efi /mnt/efi/EFI/boot/bootx64.efi cp /mnt/efi/EFI/qubes/grub.cfg /mnt/efi/EFI/boot/bootx64.cfg efibootmgr -v -c -u -L "TheEnemy1" -l /EFI/boot/bootx64.efi -d /dev/sda -p 1 reboot b…