How do I access etc default grub?

Open the file with gksudo gedit /etc/default/grub (graphical interface) or sudo nano /etc/default/grub (command-line).

What is the default boot configuration for grub?

Warning: The default configuration file for GRUB2 is /boot/grub/grub. cfg. You shouldn’t edit or modify this file, unless you are much familiar with GRUB2. This is the main file to boot into the Linux OS.

How do I restore etc default grub?

As you’re able to boot, you can use the simple method: apt purge grub-common, then apt install grub-pc os-prober. Then run sudo update-grub. Can’t promise this gets you all the way back to factory default, but almost certain it will restore memtest to the menu.

What is the grub menu?

Grub is the boot menu. If you have more than one operating system installed, it allows you to select which one to boot. Grub is also useful for troubleshooting. You can use it to modify the boot arguments or to boot from an older kernel.

How to change Grub to insert mode in VI?

1. At the prompt, type vi /etc/default/grub and press Enter to open the GRUB2 configuration file for editing. 2. Press i to change to vi insert mode. 3. Change the first line of the file to GRUB_TIMEOUT=10. 4. Press the Esc key to leave insert mode.

Why is there no / etc / default / Grub file?

If you really only want to know “why this works”, the answer is that LiveCD Ubuntu that you used for installation had this unimportant for boot file \\etc\\default\\grub.cfg, so created yours important for boot /boot/grub/grub.cfg using it. Thanks for contributing an answer to Ask Ubuntu! Please be sure to answer the question.

How can I change the default settings of GRUB2?

In other words, to customize your GRUB2 settings, you’ll have to edit the /etc/default/grub file and then run the sudo update-grub command. Open the /etc/default/grub file for editing in a standard text editor. If you want to use a graphical text editor, open a terminal — or press Alt+F2 — and run the following command:

Is the Grub file critical for the boot?

Actually the file is not critical for the boot, just to configure the boot when you execute sudo update-grub. If the file doesn’t exist, then all values are default ones, like you didn’t set them up.