Add image to grub2 on Ubuntu

First of all you need to add "Open as administrator" option to right click menu.

• First Step is Open Terminal Window and copy following command:

Terminal Command:
sudo apt-get install nautilus-gksu

When installation completed, Then enter the following command to restart Nautilus Process:

Terminal Command:
killall nautilus

• Now go to the File System Drive, then Right click on "etc" folder and Select option open as Administrator.
• Then find folder "grub.d" and open this folder, Then copy your image file to this "grub.d" folder.
• Now open this file on text editor "05_debian_theme", Now locate the following line in this file.

COLOR_NORMAL= "black/black"
COLOR_HIGHLIGHT= "magenta/black"

• Then type following line above the lines:

WALLPAPER= "etc/grub.d/Your_image_file_name.extension"

• Now Save the file and close it, Now open Terminal and type the following command for update Grub:

Terminal Command:
sudo update-grub

Restart and See your image to your Grub2.