How to Upgrade Ubuntu 12.04 LTS to Ubuntu 14.04 LTS

How to Upgrade Ubuntu 12.04 LTS to Ubuntu 14.04 LTS

How to Upgrade Ubuntu 12.04 LTS to Ubuntu 14.04 LTS

Ubuntu 14.04 LTS is a Long Term Support release which provides security updates and bug fixes for 5 years. If you are currently running Ubuntu 12.04 LTS, you can easily upgrade to Ubuntu 14.04 LTS by following these steps:

Step 1: Update the Current System

Before upgrading to Ubuntu 14.04 LTS, it is recommended to update the current system by running the following commands in the terminal:

sudo apt-get update
sudo apt-get upgrade

Step 2: Install the Update Manager

To upgrade to Ubuntu 14.04 LTS, you need to install the update manager. Run the following command in the terminal:

sudo apt-get install update-manager-core

Step 3: Edit the Release Upgrades File

Edit the release upgrades file by running the following command:

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

Change the value of Prompt to normal if it is set to lts:

Prompt=normal

Save and close the file.

Step 4: Run the Upgrade

Run the upgrade command to start the upgrade process:

sudo do-release-upgrade

Follow the on-screen instructions to complete the upgrade process. During the upgrade, you may be asked to replace some configuration files or to restart some services. Make sure to read the prompts carefully and choose the appropriate option.

Step 5: Verify the Upgrade

After the upgrade is complete, verify that you are running Ubuntu 14.04 LTS by running the following command in the terminal:

lsb_release -a

That's it! You have successfully upgraded Ubuntu 12.04 LTS to Ubuntu 14.04 LTS.

Keywords: Ubuntu, LTS, upgrade, 12.04, 14.04, update manager, release upgrades file, do-release-upgrade, verification.

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