Upgrade Ubuntu 18.04 to 20.04.

  • Create a backup of your server or vm.
  • Upgrade all installed packages of Ubuntu version 18.04 by running sudo apt update && sudo apt upgrade command.
  • Reboot the Ubuntu Linux system by tying the sudo reboot command.
  • Install the Ubuntu update tool, run: sudo apt install update-manager-core.
  • Start the upgrade procdure, run: sudo do-release-upgrade.
  • Reboot the box, run: sudo reboot.
  • Verify upgrades.