How to set background image in grub - Ubuntu

Its very easy to set background image for grub in Ubuntu. Follow these steps

1. sudo apt-get install grub2-splashimages
After installation in directory /usr/share/images/grub you can find images for grub.
2. Open /etc/default/grub file and add line
GRUB_BACKGROUND="/usr/share/images/grub/image"
3. sudo update-grub

After rebooting you will see grub background.

Ubuntu. Why grub don't loading?

Sometimes, actually when you have only Ubuntu installed on your computer, grub don't loading, that is when you turn on the computer, some time later loads ubuntu without showing grub. Issue can be resolve by boot-repair.

1. Add repository for boot-repair installing
sudo add-apt-repository ppa:yannubuntu/boot-repair

2. Update apt-get
sudo apt-get update

3. Install boot-repair
sudo apt-get install boot-repair

4. Run boot-repair

After these steps issue must dissapear.