How to Upgrade Ubuntu 20.04 LTS to 21.04





A feature that makes Ubuntu so great is the ability to upgrade from one version to the next. It allows you to take advantage of the latest software, such as security patches, as well as a host of upgraded features without having to do a complete system reinstall. So let’s begin the upgrade.







Step 1: Configure VPSie cloud server



Those who already have a system up and running should skip this step and do update their system.


  1. Sign in to your system or register a newly created one by logging in to your VPSie account
  2. Connect by SSH or console using the credentials we emailed you.
  3. Once you have logged into your Ubuntu instance, run these commands to update your system.
# sudo apt update 

# sudo apt dist-upgrade





Before we get started, let’s take a look at the current Ubuntu release. Run the following command:



# lsb_release -a








Step 2: Change LTS to normal







The following command will be used to edit the release-upgrades configuration file.



# sudo nano /etc/update-manager/release-upgrades




To switch from LTS to Normal, change the Prompt value.  


Prompt = normal







Step 3: Upgrade 20.04 to 21.04






This upgrade is being done over SSH. It’s recommended not to do this over SSH because if something went wrong, it would be very difficult to recover. You can now run the system update command to upgrade your system:




# sudo do-release-upgrade





Please be patient as the upgrading process takes some time, Since we are doing this over SSH they are asking for confirmation, so please hit ‘Y‘ if you are using SSH. 









Please click ‘Yes‘ so they don’t need to bother you with every library upgrades, it’s your choice.








Now that the upgrade has been completed, you must restart the system. You can restart your system by typing Y and pressing Enter.



Don’t forget to verify the Ubuntu version when you’ve finished the upgrade by running the command we discussed in step 1.

Congratulations on upgrading your Ubuntu system to 21.04. Thanks for reading! I hope it was informative for you! 

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