= bionic verification = ubuntu@ubuntu:~$ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.15.0-125-generic root=UUID=9e45081a-7e2b-4294-8b2f-4ccb8139ed67 ro console=tty1 console=ttyS0 ubuntu@ubuntu:~$ ls /sys/firmware/efi/efivars/ | grep FOO FOO!BAR-8ed72b3f-ad26-4d5c-aa36-38689635cac3
= bionic verification = /boot/vmlinuz- 4.15.0- 125-generic root=UUID= 9e45081a- 7e2b-4294- 8b2f-4ccb8139ed 67 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-