How to Password Protect Ubuntu's Boot Loader
Jan 03, 2012, 22:00 (0 Talkback[s])
"Ubuntu's Grub boot loader lets anyone edit boot entries or use its command-line mode by default. Secure Grub with a password and no one can edit them — you can even require a password before booting operating systems.
Grub 2's configuration options are split across multiple files instead of the single menu.lst file Grub 1 used, so setting a password has become more complicated