sudo do-release-upgrade and do-release-upgrade -d are similar, however, the
-d is for the latest dev version. April is right around the corner for the
"official" release of 16.04 LTS. Stick to what you are using and you may
find flaws that will take away from the Ubuntu experience. Stick with a
supported releases as to not to wind up with a broken HDD. Experiment on a
virtual HDD, like VMware and VirtualBox so as to not possibly break your
system.

On Fri, Mar 4, 2016 at 11:34 AM, Flames_in_Paradise <
<email address hidden>> wrote:

> The option -D will put your machine into the development-release 16.04.
>
> Just look at the last few lines of your attached log-file:
>
> 2015-12-25 19:52:00,602 DEBUG entry '# deb
> http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial main # disabled on
> upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,602 DEBUG examining: 'deb
> http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu trusty main'
> 2015-12-25 19:52:00,607 DEBUG entry '# deb
> http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,607 DEBUG examining: 'deb
> http://ppa.launchpad.net/webupd8team/unstable/ubuntu trusty main'
> 2015-12-25 19:52:00,612 DEBUG entry '# deb
> http://ppa.launchpad.net/webupd8team/unstable/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,612 DEBUG examining: 'deb
> http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu trusty main'
> 2015-12-25 19:52:00,617 DEBUG entry '# deb
> http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,617 DEBUG examining: 'deb
> http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu trusty main'
> 2015-12-25 19:52:00,622 DEBUG entry '# deb
> http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu xenial main # disabled on
> upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,623 DEBUG examining: 'deb-src
> http://ppa.launchpad.net/gezakovacs/ppa/ubuntu trusty main'
> 2015-12-25 19:52:00,627 DEBUG entry '# deb-src
> http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial main # disabled on
> upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,628 DEBUG examining: 'deb-src
> http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu trusty main'
> 2015-12-25 19:52:00,632 DEBUG entry '# deb-src
> http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,633 DEBUG examining: 'deb-src
> http://ppa.launchpad.net/webupd8team/unstable/ubuntu trusty main'
> 2015-12-25 19:52:00,637 DEBUG entry '# deb-src
> http://ppa.launchpad.net/webupd8team/unstable/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,637 DEBUG examining: 'deb-src
> http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu trusty main'
> 2015-12-25 19:52:00,642 DEBUG entry '# deb-src
> http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,642 DEBUG examining: 'deb-src
> http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu trusty main'
> 2015-12-25 19:52:00,647 DEBUG entry '# deb-src
> http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu xenial main # disabled on
> upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,647 DEBUG examining: 'deb
> http://dl.google.com/linux/chrome/deb/ stable main'
> 2015-12-25 19:52:00,652 DEBUG entry '# deb
> http://dl.google.com/linux/chrome/deb/ stable main # disabled on upgrade
> to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,652 DEBUG examining: 'deb
> http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu trusty main'
> 2015-12-25 19:52:00,657 DEBUG entry '# deb
> http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu xenial main #
> disabled on upgrade to xenial' was disabled (unknown mirror)
> 2015-12-25 19:52:00,657 DEBUG examining: 'deb
> http://ppa.launchpad.net/fossfreedom/rhythmbox-plugins/ubuntu trusty main'
> 2015-12-25 19:52:00,662 DEBUG entry '# deb
> http://ppa.launchpad.net/fossfreedom/rhythmbox-plugins/ubuntu xenial main
> # disabled on upgrade to xenial' was disabled (unknown mirror)
>
> Not sure if this is what you really want? Too many ppa-repositories
> hinder an upgrade. Noone says so about the disadvantages using ppa's
> when it comes to Upgrade. Suffered this myself years ago. Options are
> you remove the packages (hopefully catch any related packages) or you
> make use of the ppa-purge command, which is the best recommondation
> (especially for xorg-edgers).
>
> ppa-purge is meant/used to replace any packages from ppa with the
> release-version.
>
> Since not knowing very much about your installation, it may even be
> recommended to make a fresh install without formatting your home-
> partiton. This way all your personal data wont be deleted - but you only
> get a basic installation.
>
> In general it's advised to follow the instructions for Upgrade from
> Trusty's Release-Notes:
>
>
> https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes/14.04.3#Upgrading_from_Ubuntu_12.04_LTS_or_Ubuntu_13.10
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1529307
>
> Title:
>   update from 14.04 LTS to 16.04 LTS using sudo do-release-upgrade -d
>
> Status in ubuntu-release-upgrader package in Ubuntu:
>   Confirmed
>
> Bug description:
>   I am currently using 14.04 LTS and I'm trying to upgrade to 16.04 LTS
>   Alpha. Commands used: sudo apt-get update; sudo apt-get dist-upgrade;
>   sudo apt-get upgrade; sudo update-grub; sudo do-release-upgrade -d.
>   Starts to upgrade and says Aborted install and restores state back to
>   14.04 LTS. I am using a Toshiba Satellite C655D-S5518 w/ 4GB
>   RAM(upgraded) and a 500GB SATA HDD(upgraded). Everything is functional
>   for upgrades up to 15.10, but not to 16.04 Alpha. Used terminal to
>   attempt upgrade and fail everytime. Also tried in shell mode without
>   GUI, but still failed to upgrade to 16.04. Using Ubuntu 14.04.3 LTS
>   that is up to date as of 10 minutes ago.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 14.04
>   Package: ubuntu-release-upgrader-core 1:0.220.8
>   ProcVersionSignature: Ubuntu 3.19.0-42.48~14.04.1-generic 3.19.8-ckt10
>   Uname: Linux 3.19.0-42-generic x86_64
>   NonfreeKernelModules: fglrx
>   ApportVersion: 2.14.1-0ubuntu3.19
>   Architecture: amd64
>   CrashDB: ubuntu
>   Date: Fri Dec 25 19:54:37 2015
>   InstallationDate: Installed on 2015-12-21 (4 days ago)
>   InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64
> (20150805)
>   PackageArchitecture: all
>   ProcEnviron:
>    LANGUAGE=en_US
>    TERM=xterm
>    PATH=(custom, no user)
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   SourcePackage: ubuntu-release-upgrader
>   UpgradeStatus: Upgraded to trusty on 2015-12-26 (0 days ago)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1529307/+subscriptions
>