I want to change my default boot OS in GRUB2. But the only way I know of seeing the order of the OS I want in the GRUB menu is doing a reboot and seeing the menu displayed.

In grub.cfg there are many more menuentry lines than actual choices in the GRUB menu, so I can't identify in that file the one I want.

Is there any place where the actually displayed menu is stored so that I can see it without having to reboot?


I believe grub-emu should work for you

sudo apt-get install grub-emu

Then in terminal execute


enter image description here

See here for details

  • 1
    Yep, this is the answer. Thanks! By the way, how do you close the grub-emu window? When I open it, my keyboard becomes unresponsive and the only thing that works is closing the terminal window from which I run grub-emu. – ARX Nov 19 '17 at 2:19
  • @ARX Have you tried the reboot or exit command in GRUB? – daisy Nov 19 '17 at 2:27
  • Can't. No keyboard. While grub-emu's window is focused, it's dead. – ARX Nov 19 '17 at 5:03
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    NOTE: Type in the ORIGINAL shell window (where you start it from), not the "display"-window. After c (for grub prompt) and then exit the Shell-prompt is missing, type reset (a command from 'terminfo') and ENTER to get it back. – Hannu Nov 19 '17 at 17:08
  • That last comment should be added to the answer IMHO. – pchaigno May 8 '18 at 10:24

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