I have Ubuntu 14.04 installed on my system, and I am using it as the sort of host OS allowing its version of GRUB to be the boot loader and allowing it to manage all of the grub configuration. When I run "update-grub" to update the grub config file with the newly installed operating systems it does that just fine, but I can't find any way to add custom things to these entries without editing the actual "grub.cfg" which it says not to do.
The customizations I am looking to add would be things like "quiet splash=silent" for openSUSE in order to get its splash screen. Just adding "quiet" for Arch Linux, and adding "quiet rhgb" for Fedora in order to use its splash screen. I was wondering if there is any official way to do this other than editing the file it says not to edit?
Best Answer
To add custom entries, the file you should edit is
/etc/grub.d/40_custom.The options are the same as in
grub.cfg, but just in case here is a link with more info how to customize the file.