Step-by-step – Ubuntu 20.04 GRUB Change Default OS Guide

July 27, 2020 | By the+gnu+linux+evangelist.

Change GRUB Default OS on Ubuntu 20.04 Desktop – Visual Guide

Hi! The Tutorial shows you Step-by-Step How to Change GRUB2 OSes Boot Entries Order in Ubuntu 20.04 Focal LTS GNU/Linux Desktop.

And this Ubuntu 20.04 GRUB Boot Setup make use of the Grub Customizer Graphical UI.

Especially relevant: also if you can directly edit the GRUB Configuration Files on the Command Line this Tool is very useful and valuable to easily manage and dive into the tricky Grub2 Configuration.

Finally, the Grub Customizer Features are:

  • Move, remove or rename menuentries (they stey updatable by update-grub)
  • Edit the contents of menuentries or create new ones (internally it edits the 40_custom)
  • Support for GRUB2 and BURG
  • Reinstallation of the bootloader to MBR
  • Settings like default operating system, kernel params, background image and text colors etc.
  • Changing the installed operating system by running on a live cd
Step-by-step Ubuntu 20.04 Modify Boot Order Guide - Featured
  1. 1. Terminal Getting-Started Guide

    How to QuickStart with Command Line on Ubuntu GNU/Linux:

    Console Ubuntu QuickStart Guide

    First Update the Apt Repo Sources with:

    sudo apt update
    Authenticate with the User Admin Pass.
    If Got “User is Not in Sudoers file” then see: How to Enable sudo.
  2. 2. Installing GRUB Customizer

    Then to Install GRUB Customizer in Ubuntu
    Simply run:

    sudo apt install grub-customizer
    Authenticate with the User’s Admin Pass.
    If Got “User is Not in Sudoers file” then see: How to Enable sudo.

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