Abaels-MacBook-Pro:~ abaelhe$ su
Password:
bash-3.2# firmwarepasswd -check
Password Enabled: Yes
bash-3.2# firmwarepasswd -delete
Delete Firmware Password
Enter password:
Password removed
NOTE: Must restart before changes will take effect
Usage: firmwarepasswd [OPTION]
? Show usage
-h Show usage
-setpasswd Set a firmware password. You will be promted for passwords as needed.
NOTE: if this is the first password set, and no mode is
in place, the mode will automatically be set to "command"
-setmode [mode] [-allow-oroms] Set mode to:
"command" - password required to change boot disk
"full" - password required on all startups
-allow-oroms permits option roms execution
NOTE: cannot set a mode without having set a password
-mode Print out the current mode setting
-check Print out whether there is / isn't a firmware password is set
-delete Delete current firmware password and mode setting
-verify Verify current firmware password
-unlockseed Generate a firmware password recovery key
NOTE: Machine must be stable for this command to generate
a valid seed. No pending changes that need a restart.
NOTE: Seed is only valid until the next time a firmware password
command occurs.
-disable-reset-capability Disable firmware password reset using unlockseed
-enable-reset-capability Enable firmware password reset using unlockseed
NOTE: cannot enable or disable firmware password reset
without having set a password