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Now if you want to add your own boot menu entry this is where you will be able to do it. Type in the following as per the image. Now, you will have to use the file 40_custom for writing your own menu entries. You can go ahead and refer the entries generated by os_prober in /boot/grub/grub.cfg for your reference.
Every time grub updates, due to normal updates, I lose some icons on the grub menu. I have to manually edit the /boot/grub/grub.cfg file and add ‘–class ubuntu’ (or whatever) to lines that no longer have a ‘–class’ entry and hence display no icon.
What does GRUB 2 / custommenus do for You?
Grub2/CustomMenus. GRUB 2 runs a series of scripts which search the user’s computer and builds a boot menu based on what operating systems it finds. The scripts are highly configurable and produce a menu which requires little user input.
How to edit the user file in GRUB 2?
The GRUB 2 user file to be edited can be found in two places. /etc/default/grub to change boot menu options. /etc/grub.d/ to edit the script files which create “grub.cfg”. To start editing boot menu options go ahead and type : The things you will be able to change are : GRUB_DEFAULT= The default menu entry.
How to add your own splash image to grub?
You can go ahead and set up your own splash image by adding it to the /boot/grub/ directory This was what you could do with the /etc/default/grub file. Now if you want to add your own boot menu entry this is where you will be able to do it. Type in the following as per the image.
Which is the most important feature of GRUB 2?
GRUB 2 overview. One of the important features in GRUB 2 is flexibility; GRUB understands filesystems and kernel executable formats, so you can load an arbitrary operating system the way you like, without recording the physical position of your kernel on the disk.
What’s the default boot time for GRUB 2?
The default is “5”. Set to “0” to boot immediately without displaying the menu, or to “-1” to wait indefinitely. GRUB_HIDDEN_TIMEOUT_QUIET= Will display a count down timer if set to false, If set to true will simply display a blank screen all before displaying the actual GRUB menu.