Setting Grub 2 Password

I don’t no why I can’t add it before… ;because it’s so easy

1. First of all, we must define user and password for it.
   • cp /etc/grub.d{,.bac}
     cd /etc/grub.d
     vim 00_header

     cat << EOF

     set superusers=”simon”

     password simon 123456

     password othuser 1234

     EOF

     • add these lines to end of file
2. Protecting:
   1. All linux kernels (just linux):
      vim 10_linux

      find this:

      printf “menuentry ‘${title}’ ….

      and change it to:

      printf “menuentry –users simon othuser ‘${title}’ ….
   2. All menu entries:

      sed -i -e ‘/^menuentry /s/ {/ –users simon othuser {/’ 10_linux 20_linux_xen 30_os-prober 40_custom 41_custom

3. Finish by these commands:
   

   update-grub

   reboot # have fun 😉