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post_install() { cat << _EOF ==> Installation: ==> Add theme to your /etc/default/grub: GRUB_THEME="/boot/grub/themes/GNUAxiom/theme.txt" ==> Preferred resolution 1024x768: GRUB_GFXMODE=1024x768 ==> Update grub:# grub-mkconfig -o /boot/grub/grub.cfg _EOF }