cat /boot/grub2/grub.cfg, you get the big block of text telling you
DO NOT MANUALLY EDIT THIS FILE, indicating that you should instead edit files in
/etc/default/ instead and then run
grub2-mkconfig to update the
My question is this: why is it emphasized so strongly that one should not edit the grub.cfg file by hand?
My understanding is that changes made will not be persistent across updates and such. This seems annoying, but it doesn't seem to be that big a deal. Am I missing something?