Upgrading Ubuntu 18.04 to Ubuntu 20.04

Introduction: Ubuntu 20.04 LTS (Long Term Support) brings new features, improvements, and enhanced security. Upgrading from Ubuntu 18.04 to 20.04 LTS is a seamless process that ensures your system remains up-to-date and benefits from the latest features. Here's how to perform the upgrade.

Important Note: Before proceeding, it's recommended to back up your important data and configurations to ensure you have a safe backup in case of any issues during the upgrade.

Steps:

1. Update Packages:

   • Before upgrading, ensure your system is up-to-date by running:
     sudo apt update sudo apt upgrade

2. Install update-manager-core:

   • Install the update-manager-core package if it's not already installed:
     sudo apt install update-manager-core

3. Start the Upgrade Process:

   • Initiate the upgrade process by running:
     sudo do-release-upgrade

4. Follow On-Screen Instructions:

   • The upgrade process will provide on-screen prompts and instructions. Read them carefully and follow the prompts to proceed with the upgrade.

5. Package Configuration:

   • During the upgrade, you might be asked about package configuration changes. Review the changes and select the appropriate option based on your preferences.

6. Service Restart:

   • As part of the upgrade, some services might need to be restarted. Allow the system to perform necessary restarts when prompted.

7. Cleanup and Reboot:

   • After the upgrade completes, the system will prompt you to remove obsolete packages. To do this, run:
     sudo apt autoremove
   • Reboot the system to finalize the upgrade:
     sudo reboot

8. Verification:

   • After rebooting, verify that your system has been upgraded to Ubuntu 20.04 by running:
     lsb_release -a

Conclusion: Congratulations, you've successfully upgraded your Ubuntu 18.04 system to Ubuntu 20.04 LTS. Your system is now running the latest LTS release, benefiting from new features, enhanced security, and improved performance.