ChrisA
November 5, 2022, 9:20pm
2
Try booting the Ubuntu stick and run:
ls /sys/firmware/efi
If you see some files, then try:
sudo gdisk -l /dev/sda
and look for EFI System Partition – if it is eg. 1, then you can try:efibootmgr -v -c -u -L QUBES -l /EFI/qubes/grubx64.efi -d /dev/sda -p 1/dev/nvme0n1 replace sda accordingly.
Credits go to:
If your device is /dev/sda and efi partition is 1 then :
efibootmgr -v -c -u -L MichaelA -l /EFI/qubes/grubx64.efi -d /dev/sda -p 1
If you use qubes os as external device, folow this (I assume that your device is /dev/sda and efi partition is 1) :
cp /boot/efi/EFI/qubes/* /boot/efi/EFI/BOOT
mv /boot/efi/EFI/BOOT/grubx64.efi /boot/efi/EFI/BOOT/bootx64.efi
mv /boot/efi/EFI/BOOT/grub.cfg /boot/efi/EFI/BOOT/boox64.cfg
efibootmgr -v -c -u -L MichaelB -l /EFI/BOOT/bootx.64efi -d /dev/sda -p 1
