GRUB2 (the GRand Unified Bootloader)

GNU GRUB is a multiboot boot loader.

If you want to use a big font in a graphical terminal of grub2,
try the below command.
grub-mkfont -o /usr/share/grub/unifont.pf2 -abv -s [font size] /usr/share/
fonts/unifont/unifont.ttf

If you want to use a fixed sized small font in gfxterm,
try this. grub-mkfont -o /usr/share/grub/unifont.pf2 -v /usr/share/fonts/
unifont/unifont.pcf.gz

Requires: osprober unifont help2man