Need some help with grub question.

kirill_ivanov

Hi everybody.
I'm studying with Comptia Linux LPIC-1 Cert Guide and there is a question from the book

1. When attempting to boot your Linux system, you see an error message and
the system will not complete a normal boot. Which of the following could you
type at the GRUB menu to enter a system administrator mode for trouble-
shooting? Choose all that apply.
a. 1
b. 2
c. 5
d. s
e. S

The corrects according to the book are a,d,e and that's fine.
My question is where exactly this GRUB menu is? I've tried with few Debian/Ubuntu distros to put this at grub command line (grub menu at boot -> c) but it always says unknown command. Where can I see it works?

rob42

Hold down a 'Shift' key during boot. You should see the Grub Menu screen. Then press 'c' for the command line...

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