Intel NUC Build Playlist: https://www.youtube.com/playlist?list=PLErU2HjQZ_ZNqgp0yXEWkhTdFm1ZkAt7h
Open Grub Config File
sudo nano /etc/default/grub
Add/Edit these Lines
GRUB_DEFAULT=saved GRUB_SAVEDEFAULT=true
Type control-o to save, control-x to exit.
Update Grub
sudo update-grub