Zainstalowałem sobie w systemie obrazki do Gruba2:
sudo apt-get install grub2-splashimages
I chciałem sobie podmienić tło bootloadera, żeby zajefajnie wyglądał 
Mam w katalogu plik “samolot.tga” :
/usr/share/images/grub/samolot.tga
Zmieniłem więc plik /etc/grub.d/05_debian_theme oto jego zawartość:
#!/bin/sh -e
. /usr/lib/grub/grub-mkconfig_lib
# this allows desktop-base to override our settings
f=/usr/share/desktop-base/grub_background.sh
if test -e ${f} ; then
. ${f}
else
WALLPAPER="/usr/share/images/desktop-base/moreblue-orbit-grub.png"
COLOR_NORMAL="black/black"
COLOR_HIGHLIGHT="magenta/black"
fi
set_mono_theme()
{
cat << EOF
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
EOF
}
# check for usable backgrounds
use_bg=false
for output in ${GRUB_TERMINAL_OUTPUT}; do
if ["$output" = "gfxterm"] ; then
for i in {/boot/grub,/usr/share/images/desktop-base,/usr/share/images/grub}/samolot.{png,tga}; do
if is_path_readable_by_grub $i ; then
bg=$i
case ${bg} in
*.png) reader=png ;;
*.tga) reader=tga ;;
*.jpg|*.jpeg) reader=jpeg ;;
esac
if test -e /boot/grub/${reader}.mod ; then
echo "Found background image: `basename ${bg}`" >&2
use_bg=true
break
fi
fi
done
break
fi
done
# set the background if possible
if ${use_bg} ; then
prepare_grub_to_access_device `${grub_probe} --target=device ${bg}`
cat << EOF
insmod ${reader}
if background_image `make_system_path_relative_to_its_root ${bg}` ; then
set color_normal=${COLOR_NORMAL}
set color_highlight=${COLOR_HIGHLIGHT}
else
EOF
fi
# otherwise, set a monochromatic theme for Ubuntu
if ${use_bg} ; then
set_mono_theme | sed -e "s/^/ /g"
echo "fi"
else
set_mono_theme
fi
Na koniec jeszcze:
sudo update-grub
I niestety ciemność widzę ciemność! Dalej czarne tło 
