I've been reading a tutorial that shows how to set the background image that will be displayed behind the GRUB2 boot options menu. However, I am concerned that the text might not be visible against the image I've chosen. How can I preview what the screen will look like, without having to restart the computer?
The easiest way is to use
grub-emu. On Debian based systems, this can be installed with
sudo apt-get install grub-emu
Once you have installed it, you can run it to preview your