How to upgrade the Ubuntu server to the 14.04LTS version

This article mainly explains "how to upgrade the Ubuntu server to the 14.04LTS version". The explanation in the article is simple and clear and easy to learn and understand. Please follow the editor's train of thought to study and learn "how to upgrade the Ubuntu server to the 14.04LTS version".

We can upgrade to the latest version from a mirror image or a major hairstyle version.

1. Back up important data on the Ubuntu server

Make a backup. Because most of the operations of the article are performed through root, it may cause irreparable losses.

Enter the following command to view the existing system version:

The code is as follows:

$uname-mrs

$lsb_release-a

The output is as follows:

The code is as follows:

Linux 3.2.0-51-generic x86x64

No LSB modules are available.

Distributor ID: Ubuntu

Description: Ubuntu 12.04.4 LTS

Release: 12.04

Codename: precise

two。 How do I upgrade from the old version of Ubuntu 13.10 to the new version 14.04 on the server system?

Enter the following command to upgrade the old software package of your system and install the update-manager-core package (if your system does not have update-manager-core installed):

The code is as follows:

$sudo apt-get update

$sudo apt-get install update-manager-core

Then enter the following command to? Upgrade the Ubuntu server to the latest version such as 14.04 TLS. The following command is recommended for use in environments that do not have a graphical interface or ssh remote operation upgrade server installed. :

The code is as follows:

$sudo do-release-upgrate

Do-release-upgrate runs the upgrade tool. You just need to follow the prompts on the screen.

3. Repair and force upgrad

You may end up getting the following information on the screen when you run do-release-upgrate:

The code is as follows:

Checking for a new Ubuntu release

No new release found

Warning: The following method will check if upgrading to the latest devel (also known as unstable) release is possible via-d option.

To force the upgrade to pass, you can add the-d parameter, as follows:

The code is as follows:

Sudo do-release-upgrade-d

Reminder: about upgrading the system from the desktop from Ubuntu 13.10

First, you need to remove all third-party binary drivers, such as NVIDIA or AMD graphics drivers. Once removed, restart the desktop, hold down ALT+F2 and enter update-manager in the command box

Update manager will open and tell you: New distribution release '14.04 LTS' is available (the new version 14.04 LTS is already available). Just click Upgrade and follow the instructions on the screen.

Note that all TLS desktop users will have to wait until a Ubuntu LTS v14.04.1 is released. If you don't want to wait for this version, you can use the-d parameter in update-manager to upgrade. You can upgrade Ubuntu 12.04 LTSs to Ubuntu 14.04 LTS version in this way:

The code is as follows:

Sudo update-manager-d

4. Restart the server / desktop

Finally, restart the system

The code is as follows:

$sudo reboot

Then confirm that you have upgraded to the latest version.

The code is as follows:

$lsb_release-a

$uname-mrs

$tail-f / var/log/app/log/file

Confirm to upgrade to the latest version, and then reinstall the third-party binary driver.

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