We suppose that unrestricted wasnt removed from the first entry. If you can log in the OS through the second entry (assuming that you know the root password for the OS on the second entry), are you able to change the root users password for the OS on the first entry (like what we did in PART II)? Yes, why? No, why?

Based on your answer in the previous question, what do step 1 (making GRUB password) and step 2 (removing unrestricted) protect respectively (e.g., what is the difference between only setting a password for GRUB and setting for both). Hint: the best way to find out the answer is to set a password for GRUB only and redo part II.

According to the computers booting process, if the bootloader is hardened, does it mean that the computer is safe now? Briefly introduce what else we could do to bypass the bootloaders password and how we can prevent it.