GRUB Entries Password Protection

[mbztn]

Hi, i wanna protect "Advanced Options for Ubuntu" as well as pressing "e" and "c" with a password. How can i achieve that without having to be prompted for the password when booting in my OS.

Thanks.

[ecophobia]

I guess you can check Grub man page, look for lockalternative=true Alternatively, use HDD encryption.

[EuclideanCoffee]

Check out the security section in the man page. To set your menu entries.

https://gnu.org/software/grub/manual....html#Security

Then follow this tutorial to set a password.

https://askubuntu.com/questions/6562...oect-grub-menu

Take the output of grub-mkpasswd-pbkdf2
Create a new file called: etc/grub.d/40_custom
Contents should look like this:

set superusers="username"
password_pbkdf2 username hash

Update. sudo update-grub
Add menu specific commands here:

menuentry "May be run by user1 or a superuser" --users user1 {
set root=(hd0,2)
chainloader +1
}


Any non-restrictive menus can be set like this

--unrestricted ${CLASS}