Solved by reading, this two links : https://www.gnu.org/software/grub/manual/html_node/Security.html
http://daniel-lange.com/archives/75-Securing-the-grub-boot-loader.html ** Changed in: grub2 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1314127 Title: Secure Grub2 "edit" menu also secures booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1314127/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
