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I have read that upgrading from 14.04 to 16.04 is not possible. Instead there is a recommendation to upgrade in steps through all releases and ultimately 16.04. Is this information correct?

I did attempt a staged upgrade on a 32-bit Dell laptop and when I got to 15.10 the system would not start the GUI. I did a fresh install of 16.04 and it worked just fine.

Can one upgrade from 14.04 to 16.04 directly and what are the steps to make that a success? Ubuntu is all I use and I cannot lose my current files and apps.

Zanna
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David Brown
  • 11

1 Answers1

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Procedure:

First: You need to update the system.

Open a terminal,

Press Ctrl+Alt+T

Run it:

exec sudo -i
apt-get update
apt-get dist-upgrade

Now edit the file /etc/update-manager/release-upgrades and change the value of Prompt from normal to lts, continue running:

nano /etc/update-manager/release-upgrades

Ctrl+O Save File

Ctrl+X Close nano

Reboot your system to finish installing updates, and to upgrade to new available version:

Open a terminal,

Press Ctrl+Alt+T

Run it:

exec sudo -i
update-manager -d

Software Updater will show up and search for the new release.

However, Ubuntu 16.04 is available now.

Press the button Upgrade to start upgrading to Ubuntu 16.04

The Software Updater will ask you to confirm still you want to upgrade, press Start Upgrade to begin installing Ubuntu 16.04

Now, the Software Updater will prepare to start setting up new software channels, and after a few minutes, the software updater will notify you the details the number of packages are going to be removed, and number of packages are going to be installed, press Start upgrade to continue.

Ended the dist-upgrade, reboot your system and:

Open a terminal,

Press Ctrl+Alt+T

Run it:

exec sudo -i
dpkg --configure -a
apt-get -f install
apt-get update
apt-get dist-upgrade
apt-get autoremove
apt-get clean
kyodake
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