Ubuntu upgrade 16.04 LTS (Xenial Xerus)

Ubuntu 16.04 LTS (Xenial Xerus) is out a while ago today April 21, 2016, Canonical proudly announced the stable release of Ubuntu 16.04 LTS and the new project code name is Xenial Xerus. We will get support & updates for next 5 Years until 2021. Ubuntu 16.04 ships with 4.4 LTS kernel and lot of new things included. All core packages, applications and software’s upgraded to latest version and there is no major issues on this release.

Many of these packages came from an automatic sync from Debian’s unstable branch; others have been explicitly pulled in for Ubuntu 16.04 LTS. Navigate to Ubuntu 16.04 LTS link to download Xenial Xerus images, make sure you should choose stable images because Beta-2 images also there within the page.

Note : 1) Don’t forget to take backup of your important/valuable data. If something goes wrong we will install freshly and restore the data.
2) Upgrade will take time based on your Internet connection and application which you have installed.

1) Checking the current version of my Desktop

See my current desktop version in the below snapshot.
ubuntu-15-10-wily-werewolf-upgrade-8

2) Run the upgrade 16.04 LTS from 15.10

Now, its time to upgrade your Operating system to 16.04 LTS (Xenial Xerus) from 15.10 (Wily Werewolf).

[Update your system index & packages to latest version]
$ sudo apt-get update && apt-get upgrade

[Perform Ubuntu OS version upgrade]
$ sudo do-release-upgrade

Upgrade initiated Details.

Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B
Get:2 Upgrade tool [1,264 KB]
Fetched 1,264 KB in 0s (0 B/s)
authenticate 'xenial.tar.gz' against 'xenial.tar.gz.gpg'
extracting 'xenial.targ.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree

We need to disable Third Party repository by hitting the Enter button to move forward the upgrade.

Updating Repository information

Third party sources disabled

Some third party entries in your sources. list were disabled. You can 
re-enable them after the upgrade with the 'software-properties' tool 
or your package manager.

To continue please press [ENTER]

Hit http://dl.google.com/linux/chrome/deb/ stable main

Start Downloading the Ubuntu 16.04 LTS packages, It will take a while based on your Internet connection. Its time to have a cup of coffee.

Do you want to start the upgrade?

66 installed packages are no longer supported by Canonical. You can
still get support from the community.

20 packages are going to be removed. 158 new packages are going to be
installed. 1350 packages are going to be upgraded.

You have to download a total of 850 M. This download will take about
12 minutes with your connection.

Installing the upgrade can take several hours. Once the download has
finished, the process cannot be canceled.

Continue [yN] Details [d]y
.
.
Get:591 http://in.archive.ubuntu.com/ubuntu/ xenial/main libnm-glib-vpn1 amd64 1.1.93-0ubuntu4 [14.2 kB]
Get:592 http://in.archive.ubuntu.com/ubuntu/ xenial/main libpcap0.8 amd64 1.7.4-2 [117 kB]
Get:593 http://in.archive.ubuntu.com/ubuntu/ xenial/main libbluetooth3 amd64 5.37-0ubuntu5 [61.3 kB]
Get:594 http://in.archive.ubuntu.com/ubuntu/ xenial/main libnewt0.52 amd64 0.52.18-1ubuntu2 [40.8 kB]
Get:595 http://in.archive.ubuntu.com/ubuntu/ xenial/main libisc-export160 amd64 1:9.10.3.dfsg.P4-8 [152 kB]
Get:596 http://in.archive.ubuntu.com/ubuntu/ xenial/main libdns-export162 amd64 1:9.10.3.dfsg.P4-8 [664 kB]
Get:597 http://in.archive.ubuntu.com/ubuntu/ xenial/main isc-dhcp-client amd64 4.3.3-5ubuntu12 [222 kB]

Few services need to be restart, While installing new packages. Hit Yes button, it will automatically restart the required services.

It’s time to remove obsolete (Which is anymore needed for system) packages. Hit y to remove it.

Searching for obsolete software
Reading package lists... Done    
Building dependency tree          
Reading state information... Done
Reading state information... Done

Remove obsolete packages? 


68 packages are going to be removed. 

 Continue [yN]  Details [d]y

Upgrade is successfully completed and need to restart the system. Hit Y to restart the system.

System upgrade is complete.

Restart required 

To finish the upgrade, a restart is required. 
If you select 'y' the system will be restarted. 

Continue [yN]y

Note : Few times, it will ask you to confirm the configuration file replacement to move forward the installation.

3) Checking the upgraded version of my Desktop

See my upgraded desktop version in the below snapshot.
Upgrade-Ubuntu-16-04

Go-ahead and play with UBUNTU 16.04 LTS Xenial Xerus and update your feedback.

Magesh Maruthamuthu

Love to play with all Linux distribution

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