https://askubuntu.com/a/1437198
How do I hide the GRUB menu showing up at the beginning of boot?
I stopped dual booting and I don't want to have to choose the OS any more. I want to boot into Ubuntu 12.04 directly without seeing the GRUB menu. How can I achieve that?
askubuntu.com
As of ubuntu 22.10 i recommend this:
edit the file /etc/default/grub:
sudo nano /etc/default/grub
Make sure you have this lines:
GRUB_TIMEOUT=0
GRUB_RECORDFAIL_TIMEOUT=0
Save and exit run updater:
sudo update-grub