How To Upgrade Ubuntu 18.04 LTS to 20.04 LTS Using Command Lines

This tutorial explains how I successfully upgraded my Ubuntu Desktop operating system from 18.04 LTS to 20.04 LTS. This goes through four clear & easy steps using command lines with a restart and includes preparations information. I wish you also upgraded Ubuntu successfully. Welcome to Ubuntu!

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Preparations

This is a tutorial to upgrade Ubuntu from Bionic Beaver to Focal Fossa. I did a successful upgrade from a freshly installed 18.04 installed in a 30GB disk drive partition with 20GB free space by downloading at least 2GB data in total and spending more than 2 hours in a broadband internet access. So you should prepare:

• 2 hours time or more.
• 5GB free disk space or more.
• Stable internet access. Fast and unlimited one is recommended.
• [SYSTEM] Make sure to choose 'For any newer version' choice in the Software & Updates. It's strange but it's true.
• [SYSTEM] Make sure to disable all PPAs in the Software & Updates.

1. Upgrade to Latest 18.04 LTS

• 1) Do the upgrade command lines below.
• 2) Watch patiently your monitor.
• 3) Answer by pressing TAB to switch between selections and pressing ENTER to choose it if you see a purple screen that asks you question.

Before leveling up to a next operating system version, you should first upgrade your current 18.04 into the latest point release version available today that is 18.04.5. On my freshly installed system, this downloads at least six hundred megabytes and make use of about one gigabyte disk space in one hour. Do the current upgrade with three commands:

$ sudo apt-get update
$ sudo apt-get upgrade --yes
$ sudo apt-get dist-upgrade --yes

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2. Upgrade to 20.04 LTS

• 1) Do the upgrade command line below.
• 2) Answer with ENTER to perform the upgrade.
• 3) Answer every question with 'yes' or 'y' unless you know the otherwise.
• 4) Watch patiently your monitor.
• 5) Answer by pressing TAB to switch between selections and pressing ENTER to choose it if you see a purple screen that asks you question.

Now it's time to level up your current operating system to next Ubuntu version 20.04 LTS. This will download up to more than one gigabyte of data and make use of disk space plenty more than that by several hours duration of time. Do this by one single command line:

$ sudo do-release-upgrade

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3. Accept Configurations

If you see question like below, answer with default answer unless you know the otherwise.

4. Accept Restart

If Terminal asks for a restart, do it.

Final Result

Congratulations! Now your Ubuntu is 20.04 LTS.

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