Translations:Make GRUB menu & boot-up/down fonts bigger/14/en
From Manjaro
This one requires you to choose a font that you like (mono fonts are easiest to read), I chose DejaVuSansMono20 & here is the command line that creates this font in a GRUB compatible format, in the size that you have chosen & places it in the newly created /boot/grub/fonts directory (its a long command & it is ALL on one line):