How To Rebuild GRUB Configuration file

Whenever We change our GRUB configuration, we need to rebuild it:

 

The command to rebuild your GRUB configuration varies. On Fedora and open SUSE, use this command:

$ sudo grub2-mkconfig -o /boot/grub2/grub.cfg

For Ubuntu, use:

$ sudo grub-mkconfig -o /boot/grub/grub.cfg

Ubuntu Linux also has a script that runs grub-mkconfig, update-grub:

$ sudo update-grub

 

Remember to always verify your correct filenames and paths when you edit your GRUB configuration because they vary on the different platforms of Linux.

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