I've installed Lubuntu on a pc. When the pc turns off incorrectly, sometimes, at the next boot, the grub menu appears and it wait for my choise. I would like to run my os, every times and in any case, without to show GRUB menu. How can I do this? Thanks.
Here is your answer. You can reduce the Timeout of GRUB and then on expiration it will automatically run currently selected OS, which in your case will be "your OS"