Can I smoothly upgrade from one LTS to next LTS release?

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Comments and links about LTS systems

It can be difficult and confusing to select the version of Ubuntu both for the first installation and for upgrading to a new released version. This answer will focus on how to find the version with the longest remaining support time (until 'end of life'), which is often the first point release of an LTS release (LTS stands for Long Time Support).

Right now, when this is written, it is Ubuntu 16.04.1 LTS, and its iso files are not found via the 'usual' links for the current versions.

The support intervals are described with details and diagrams in this link,

www.ubuntu.com/info/release-end-of-life

The kernel series of the second, third and fourth point releases are different from the kernel series of the first point release, and are not supported for a long time. The hardware enablement stack must/will be upgraded according to these...

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Ubuntu 16.04 (Xerial Xerus) Long Term Support has been officially released and many users are already eager to find out more about the changes and new features it has come with. This can only be done by doing a fresh install or upgrading from your old version of Ubuntu Linux.

In this article, we shall look at a step by step guide to upgrading your Ubuntu 14.04 LTS to Ubuntu 16.04 LTS.

Upgrade Ubuntu 14.04 to Ubuntu 16.04 – Desktop Edition Upgrade Ubuntu 14.04 to Ubuntu 16.04 – Server Edition Upgrade from Ubuntu 15.10 to Ubuntu 16.04

One key thing to note before following the steps below is that you have to backup important data such as folders, documents, images and many more on your system, never take chances because sometimes upgrades do not always go well as expected. Your may face issues that can lead to data loss in case an upgrade fails.

Upgrade Ubuntu 14.04 to Ubuntu 16.04 – Desktop Edition

First of all, you check whether your system is...

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try to copy this this trusty sources.list file to your /etc/apt/ folder but make a backup first

this might work . i did this trick when ubuntu 13.10 fails to update the temporary sources.list

and it works without any problem

Warning: Try it with your own risk

just download my own sources.list.txt and rename to sources.list then copy on your folder /etc/apt

open terminal and update the apt list

$ sudo apt-get update

if updates command finish with no errors

type

$ sudo apt-get dist-upgrade

then it will download all needed upgrades for trusty tahr , including kernels and upgraded version of your all packages as well (if available)

then reboot if done with no errors

please make a backup first !...

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There is one more day ahead for Ubuntu 16.04 LTS final release. Tomorrow, April 21, 2016, you can download and install Ubuntu 16.04 LTS. In the meantime, Let us see how to upgrade to Ubuntu 16.04 LTS from Ubuntu 14.04 LTS.

For your information, Ubuntu 14.04 LTS is supported until 2019. So, it’s completely not necessary to upgrade your Ubuntu 14.04 LTS to Ubuntu 16.04 LTS. If you want to use new updated packages, then do upgrade. Otherwise, just stick with Ubuntu 14.04. Ubuntu 14.04 LTS users can get the updates till 2019.

The method of upgrade between LTS releases are quite same as normal Ubuntu releases, except a small change in the Software updater.

Let us get started now.

First things first

Make sure twice you have backup your important data before starting the upgrade process.

Then, update your Ubuntu 14.04 LTS system using command:

sudo apt-get update && sudo apt-get dist-upgrade

After updating Ubuntu 14.04 LTS, reboot it to...

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Question is about Ubuntu release process. Are migrations from n to n+1 releases expected?

Assuming we have server with installed Ubuntu 14.04 LTS. Will it be smoothly upgradable to Ubuntu 16.04 LTS via apt-get upgrade ?

Assumptions:

scope is software therefore we assume that given hardware is supported on both releases (upgrading from and to) that's why, always before upgrade you are asked to make backup to be able to revert in case of failure

Yes, you can upgrade from one Ubuntu LTS version to the next one, skipping the non-LTS releases in-between. It's intended to work that way and it gets tested.

You can upgrade smoothly through LTS releases whether it's Server or Desktop. It doesn't matter what you use, you just need to use these commands:

For Desktop Version:

sudo do-release-upgrade

For Server Version:

sudo apt-get install update-manager-core sudo do-release-upgrade

NOTE: Please always make sure you test the target LTS you're...

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Introduction

Warning: As with almost any upgrade between major releases of an operating system, this process carries an inherent risk of failure, data loss, or broken software configuration. Comprehensive backups and extensive testing are strongly advised.

To avoid these problems, when possible, we recommend migrating to a fresh Ubuntu 16.04 server rather than upgrading in-place. You may still need to review differences in software configuration when upgrading, but the core system will likely have greater stability. You can follow our series on how to migrate to a new Linux server to learn how to migrate between servers.

The Ubuntu operating system's next Long Term Support release, version 16.04 (Xenial Xerus), is due to be released on April 21, 2016.

Although it hasn't yet been released at the time of this writing, it's already possible to upgrade a 15.10 system to the development version of 16.04. This may be useful for testing both the upgrade...

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check lastest version ubuntu

Step 1 – Back Up Your System

Step 2 – Upgrade Currently Installed Packages

sudo apt-get update

sudo apt-get upgrade

This process may take some time. Once it finishes, use the dist-upgrade command, which will perform upgrades involving changing dependencies, adding or removing new packages as necessary. This will handle a set of upgrades which may have been held back by apt-get upgrade:

sudo apt-get dist-upgrade
Again, answer y when prompted to continue, and wait for upgrades to finish.

Now that you have an up-to-date installation of Ubuntu 14.04,
you can use do-release-upgrade to upgrade to the 16.04 release.

Step 3 – Use Ubuntu's do-release-upgrade Tool to Perform Upgrade
First, make sure you have the update-manager-core package installed:

sudo apt-get install update-manager-core

Start by running do-release-upgrade with no options:

sudo do-release-upgrade
...

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This document describes how to perform an LTS release upgrade in Ubuntu. There are many upgrade methods one can perform using Ubuntu. One can upgrade packages using sudo dist-upgrade and sudo apt-get update commands.

Running the above two commands only upgrade existing packages and their dependencies, no new packages that are not already installed will be installed.

Ubuntu also has standard release cycles to support and fix bugs and apply security updates. It uses these cycles to upgrade the operating systems, including packages. There are basically two types of upgrade releases that are carried-out by Canonical, the parent company behind Ubuntu.

The first release cycle is called Regular release cycle. Canonical will support this release with bug fixes and security patches for as long as 9 months. Ubuntu computers that subscribed to this release cycle see upgrade every 9 months. This is a quick release cycle and mostly for desktop computers.

Enhance your...

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First make sure you have the latest update manager for your release:

% sudo apt-get install update-manager

Second, change the ‘Prompt’ variable in the following file:

% sudo vi /etc/update-manager/release-upgrades

Change ‘lts’ to ‘normal’, if you are already using a non-LTS version then you can skip this step.

% sudo apt-get update
sudo do-release-upgrade -d

or

% sudo apt-get dist-upgrade -d

One important note is that you can’t JUMP from for example: 14.04 LTS to 15.04 normal directly (-d stands for devel release). What you usually do is UPGRADE to 14.10 first and then when 15.04 is released toward the end of April, then you will upgrade to that. So you have to incrementally upgrade like this: 14.04 -> 14.10 -> 15.04

If you have any PPAs in your “software sources” comment them out before doing the upgrades then re-check them afterwards. For example with Dropbox, you can comment out the line starting with...

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This question already has an answer here:

Can I smoothly upgrade from one LTS to next LTS release? 10 answers

As @Mark Kirby says, this is a probable duplicate of "Can I smoothly upgrade from one LTS to next LTS release?". The basic answer, is yes you can upgrade smoothly from one LTS (long term service) release (say 14.04 LTS) to another (say 16.04) without installing intermediates.

You can do this for Desktop LTS releases with the commands:

sudo do-release-upgrade

or

sudo update-manager -d

... and for the Server LTS releases with the commands:

sudo apt-get install update-manager-core sudo do-release-upgrade

HOWEVER, I would say that I've watched plenty of "tested" software that's relatively widely used break, malfunction, or otherwise work improperly, so I would suggest a basic backup of your home directory to an appropriate form of external storage, i.e.

mkdir...
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With the release of Ubuntu 16.04 LTS now just a couple of days away you may be trying to decide whether to upgrade or not.

Well, we’re here to complicate matters by showing you how to do it, both before this Thursday’s release and after it.

“Ask yourself: ‘Do I really need to upgrade right now?'”

So if you’re wondering how to upgrade Ubuntu 14.04 LTS to Ubuntu 16.04 LTS, read on; we’re here to walk you through the process step-by-step.

Is Performing an LTS-to-LTS Upgrade Recommended?

Like the version you are upgrading from, Ubuntu 16.04 is a Long Term Support release. It will receive critical bug fixes and security updates from Canonical for 5 years.

A device running Ubuntu 14.04 LTS will only tell you there is a new Ubuntu update after the first point release goes live. In Xenial’s case that’s July.

In short: you won’t be notified of an upgrade this week.

But you don’t have to wait until the system gets around to...

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This document describes how to upgrade from Ubuntu 12.04 to Ubuntu 14.04 LTS. Generally, the Ubuntu .04 versions that get released every 2 years are Long Term Support (LTS) releases, for instance Ubuntu 12.04, 14.04 etc. Effectively, this means that the LTS release comes supported with bug fixes and security updates for as long as 5 years, hence users would not have the privilege of being alerted through popups urging them to install the latest available version.

1 Preliminary Note

This tutorial is based on Ubuntu 12.04 server, so you should set up a basic Ubuntu 12.04 server installation before you continue with this tutorial. The system should have a static IP address. I use 192.168.0.100 as my IP address in this tutorial and server1.example.com as the hostname.

2 Upgrading Existing Ubuntu LTS Release to the Next Available LTS

While this phenomena does not affect usage of regular Ubuntu releases, those users who are tempted to access updated...

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Ubuntu

releases a new version of their operating system every six months. Ubuntu supports each release for 18 months with patches and updates. Every two years Ubuntu releases an LTS, or long term support, version. These LTS releases receive three years of patches and updates for the desktop version and five years of support for servers. By default, these LTS releases will only upgrade to newer LTS releases. If you have an LTS version of Ubuntu installed and want to upgrade it to a newer release version that is not an LTS release, you will have to change a setting first.

First, install the update tool:

$ sudo aptitude -y install update-manager-core

Make a backup of the config file you'll be editing:


$ sudo cp /etc/update-manager/release-upgrades /etc/update-manager/release-upgrades.orig

Now open that file:


Using gedit:
$ sudo gedit /etc/update-manager/release-upgrades

Using vi:
$ sudo vi...

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1 • Freespire/Linspire (by Promet on 2018-02-05 01:51:02 GMT from Hong Kong)
Frankly speaking, the new Freespire/Linspire share nothing of their past despite the name and logo.

The old *spires emphasize on a fully-fledged desktop based on KDE plasma, and a Apple app-store styled software center. Although some of its ideas contradicted with the idea of free software, those are also their selling points as well.

The new distro just bring this nostalgic name back to the community, with a simple XFCE desktop and just some artworks, not to say that even the Ubuntu software Center now is much better than the Linspire CNR software center at that time.

2 • Wayland, Xorg and Mir (by Cartouche on 2018-02-05 02:12:05 GMT from France)
Me, I love...
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If you're still attached to your old PC – perhaps for financial reasons – then ask if you might be able to upgrade it to a later version of Windows. The obvious candidates are Windows 7 and 8, because both will be familiar to you, and don't have demanding system requirements.

If your PC has a 1GHz or faster processor, 1GB RAM, 20GB free hard drive space and a DirectX 9-compatible graphics card or chip, it'll work with the newer version of Windows. Performance won't be as fast as in XP, but it should be acceptable, particularly if you don't run too many programs at once.

Before taking the plunge however, download and run either the Windows 7 Upgrade Advisor or Windows 8.1 Upgrade Assistant to get a more detailed compatibility report – you may find the cost of upgrading or replacing different parts of your PC is more expensive than simply replacing it.

Of course, you could upgrade from Windows XP to Windows 10, but bear in mind that there is no way to upgrade...

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