$final_root_fs_uuid = find_fs_uuid_of_device($root_block_device);
generate_fstab($final_root_fs_uuid, $efi_fs_uuid);
system('mount /boot/efi');
$final_root_fs_uuid = find_fs_uuid_of_device($root_block_device);
generate_fstab($final_root_fs_uuid, $efi_fs_uuid);
system('mount /boot/efi');