Updating the GRUB Background

I used this to update the background from the garish purple to a custom image using Ubuntu 19.10.

First, move an image to /boot/grub. According to the Grub Manual, the background image must end with .png, .tga, .jpg, or .jpeg. Then run update-grub.

For example,

sudo cp /home/user/pictures/new-background.png /boot/grub
sudo update-grub

2020-01-12