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  The official release method to upgrade to Ubuntu 15.04
  Add Date : 2018-11-21      
  Ubuntu 15.04 (Vivid Vervet) then there will come at the appointed weeks, but there must be some small partners eager, to tell you the following small series method.

It must first be noted that this article is to share how to upgrade from Ubuntu 14.10 to Ubuntu 15.04, if you are using Ubuntu 14.04, you will need to upgrade to 14.10 and then upgrade to 15.04.

let's start!

Desktop version upgrade:

First check the system update, if the update:

sudo apt-get update && sudo apt-get dist-upgrade
Next, check for available versions:

sudo update-manager -d
Then enter the graphical interface updates:

Enjoy the new version of it!

-d upgrade Update Manager to tell the development version, that is, before the official release of Ubuntu 15.04, the upgrade time depending on your network speed.

Note: Because it is inevitable that the development version of a small part of the bug, on the other hand is a short-term support version of Ubuntu 15.04, so if you are using in their daily work life, it is best not to upgrade to 15.04.
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