How to remove dual boot menu?

boot dual-boot grub2

Open the terminal application and enter

sudo update-grub

This probes for other existing OSes and writes a new grub configuration; since you deleted the windows partition, it shouldn't be in the menu anymore on the next boot.

You can also disable the Grub Os Prober if you like. Just add GRUB_DISABLE_OS_PROBER=true to /etc/default/grub and run sudo update-grub again.

To disable the display of the menu:

Edit /etc/default/grub with elevated rights

and set GRUB_TIMEOUT=0

Run sudo update-grub again.


You can use an easy to use GUI app called grub-customizer to make your life a little easy. As the name suggests, you can do much more than just reordering Grub menu entries with it.

You can install it by:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer

More information in the following page: How do I change the GRUB boot order?

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