Why does grub2.02 require a password on any boot?

Question

linux

Gentlemen and ladies, greetings.
I finished tuning Ubuntu, but with pain in my heart I confess that when I tried to password-protect access to the hornbeam, everything turned out better than I planned.
Moreover, it was so successful that the password must be entered at any boot, and not just when trying to boot in single user mode. This is actually the problem.
Did it like this:

sudo gedit /etc/grub.d/40_custom
set superusers="root"
password_pbkdf2 root grub.pbkdf2.sha512.10000.2B8A9DBC7118B6FA0A4BE9E7CB137ED8F139889F95D86D0A98547B12F78955D10BC8F86904722118CA543B5D46B9EC69CB3C9B53117BFB24EF63818B7C629F01.7B6D80CACB009C4AB2E7519B3F2937B2293925A4CC273A270C96632776530ADFAB3622443CF4608EC6F209E78057FF672DD90583E8EF2CD99DE5660B18B6C60C

grub-mkconfig -o /boot/grub/grub.cfg

Be so kind as to help keep the hornbeam password-protected, but at the same time, so that it does not disturb ordinary users.

Answer 1

It seems that everything is clearly described in the documentation :
Therefore, you need to go through all parts of the grub config and menuentryadd --unrestricted.