Startup system with Debian Live USB key. Prepare envirnoment to chroot Mount system (here with boot included) mount /dev/nvme1n1p2 /mnt # with /boot included in root mount -t sysfs /sys /mnt/sys mount -t proc /proc /mnt/proc mount -o bind /dev /mnt/dev Mount efi requirements mount /dev/nvme1n1p1