How to change Grub Background themes in ubuntu and Linux Mint

The default  Grub Background of Debian Linux  is like shown in below. you might have got tired of seeing a blue box with black background for GRUB when the Linux was booting up. But there is a way to change the boring Background of GRUB. In this tutorial I will show you how to change the  Grub Background of Debian linux operating systems such as Ubuntu15&16 and Linux Mint 17

 

grub default background
GRUB default background

 

If we want to change the Background of grub menu, the image should be PNG, JPG or TGA image. JPG/ JPEG images must be 8-bit (256 color). Else you will get errors, so the PNG images are preferable. Images should be non-indexed, RGB.

 

The GIMP image editor is one application which can edit images to conform to the GRUB 2 standards. Use the Image > Mode menu options to set the properties to RGB and ensure the mode is not set to Indexed

There is two ways to change the Grub Background in Debian Linux(Ubuntu, Linux MInt Etc), but these both are very easy. Only a few steps are required to accomplish the task.

Changing the Grub Background theme for Ubuntu 15

Method 1:

Open  the file grub located in /etc/default/ folder with a text editor gedit  by using the following command

sudo gedit /etc/default/grub

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""
..............
.....................
Some part of output omitted

Add the following line:

GRUB_BACKGROUND=/path/filename 

Example: GRUB_BACKGROUND=”~/Pictures/grass.png”

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""
GRUB_BACKGROUND="~/Pictures/grass.png"
.....................
Some part of output omitted

After adding the line  GRUB_BACKGROUND   save and close the gedit editor

For practice take the following image. you can download it from here.

grass
Grass background image for practice

Then  execute the following command and reboot the system

sudo update-grub

Generating grub.cfg …
Found background image: ~/Pictures/grass.png
Found linux image: /boot/vmlinuz-2.6.39-0-generic
Found initrd image: /boot/initrd.img-2.6.39-0-generic
Found linux image: /boot/vmlinuz-2.6.38-8-generic
Found initrd image: /boot/initrd.img-2.6.38-8-generic
Found memtest86+ image: /boot/memtest86+.bin
done

Restart now your computer by using the command sudo reboot  to see if changes are successful (hold down the SHIFT key to bring up the GRUB boot screen while rebooting)

Method 2:

The simplest way to change the Grub Background is as follows

Open up a terminal window and run following command to open nautilus file browser with super user privilege.

sudo nautilus

Copy an image file you want to use as grub background and paste it under /boot/grub/ directory.

If we copied and pasted several images into /boot/grub/, only first one was used as background after update grub.

Then execute the command sudo update-grub

The sample output is like

Generating grub.cfg …
Found background image: grass.png
Found linux image: /boot/vmlinuz-2.6.39-0-generic
Found initrd image: /boot/initrd.img-2.6.39-0-generic
Found linux image: /boot/vmlinuz-2.6.38-8-generic
Found initrd image: /boot/initrd.img-2.6.38-8-generic
Found memtest86+ image: /boot/memtest86+.bin
done

 

Restart now your computer by using the command sudo reboot  to see if changes are successful (hold down the SHIFT key to bring up the GRUB boot screen while rebooting).

Enjoy!

 

grub background
grub updated background

Now you will see the Changed Grub Background. You will try with number of different images.

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