Setting up
2. Installing GRUB Customizer
How to Install GRUB Customizer on GNU/Linux
3. Launching GRUB Customizer
Finally, Launch & Enjoy GRUB Customizer
Use the Desktop Launcher:From Shell with:
grub-customizer
4. Setting Up Debug Boot
Now to Set GRUB Debug Mode on Ubuntu Desktop
Choose the “General settings” Tab.
And on the “kernel paramenters” Box set:nosplash debug
Possibly, add the “–verbose” Flag to display each Entry.
And Save!Done! :)