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brett
Asked: 2016-04-10 05:32:59 +0800 CST

Upgrade from Ubuntu 14.04 to 16.04

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As I understand it, in order to upgrade from 14.04 to 16.04 one must upgrade to 14.10. At this time it appears 14.10 is not supported. From the command line do-release-upgrade -d produces

WARNING:root:file 'utopic.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.

(there is no problem with my network)

Is there a workaround, perhaps a mirror to the official? I just don't have the time to install 16.04 from scratch.

14.04

4 Answers

  1. Upgrades from 14.04 to 16.04 are not automatically made available but in July the first point release 16.04.1 will become available and all 14.04 users will be offered the upgrade then.

    However, if you want to upgrade immediately, you do NOT need to upgrade to an intermediate release first. Just run the following in a terminal (and type your password):

    sudo update-manager -d

    You will then be offered the 14.04 -> 16.04 upgrade without waiting for 16.04.1.

    The reason Ubuntu doesn't automatically offer 16.04 to 14.04 users is simple: those users are using a very stable LTS release, and might hit undiscovered bugs in 16.04 if they upgraded immediately at release. Any important bugs found in 16.04 should be fixed by the 16.04.1 point release, so LTS users have less chance of running into bugs in the new release.

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  2. By running the normal upgrade commands in 14.04 ( sudo apt-get update, sudo apt-get upgrade, sudo apt-get dist-upgrade, sudo update-manager -d) -

    enter image description here

    Canonical responds with the following -

    enter image description here

    Selecting "Upgrade" gives -

    enter image description here

    By doing the following I was able to upgrade from 14.04 to 14.10

    1. Change all instances of http://us.archive.ubuntu.com/ubuntu/ in /etc/apt/sources.list to http://old-releases.ubuntu.com/ubuntu/

    2. Run the normal commands: sudo apt-get update, sudo apt-get upgrade, sudo apt-get dist-upgrade, sudo update-manager -d

    3. Then upgrade from 14.10 to 15.10 and then to 16.04

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  3. According to the release schedule, 16.04 (Xenial Xerus) will be officially released on April 21st, 2016. Until then, there is no officially supported method of upgrade.

    If you want to test 16.04, you can always download the latest beta build and use the Live CD/Live USB environment.

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  4. Upgrading from one LTS release directly to the next ( like 14.04 to 16.04 ) is supported; you do not need to go thorugh all of the intervening releases.

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