how do I stop this GRUB option to show up when I start my PC

Question

How do I remove this GRUB os selection ?

I'm on Ubuntu 20.04 LTS

Answer 1

You may edit the grub configuration file using the command

 sudo gedit /etc/default/grub

and change the line GRUB_TIMEOUT = 10 to GRUB_TIMEOUT=0. Also add the lines GRUB_DISABLE_OS_PROBER=true GRUB_TIMEOUT_STYLE=hidden

Save the file. Update the Grub using the command

sudo update-grub

and reboot the machine.