= xenial verification - ubuntu@ubuntu:~$ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.4.0-195-generic root=UUID=6f35ed47-31af-4f66-b33f-5863971f8df0 ro console=tty1 console=ttyS0 ubuntu@ubuntu:~$ ls /sys/firmware/efi/efivars/ | grep FOO FOO!BAR-8ed72b3f-ad26-4d5c-aa36-38689635cac3
= xenial verification - /boot/vmlinuz- 4.4.0-195- generic root=UUID= 6f35ed47- 31af-4f66- b33f-5863971f8d f0 ro console=tty1 console=ttyS0 efi/efivars/ | grep FOO 8ed72b3f- ad26-4d5c- aa36-38689635ca c3
ubuntu@ubuntu:~$ cat /proc/cmdline
BOOT_IMAGE=
ubuntu@ubuntu:~$ ls /sys/firmware/
FOO!BAR-