I currently have Ubuntu 15.10 and I want to upgrade that to Xenial Xerus ( 16.04 LTS ),

I invoked this in terminal :

update-manager -d

but when the windows pops out and it downloads some files from repository it says :

The software on this computer is up to date

It doesn't find the new release

What am I missing?

  • Thanks I fixed it with adding a sudo before the command. The problem was about permission... – Ehsan Jun 4 '16 at 13:54

You need to add sudo to the command to run it as an administrator for update-manager to work properly. So you would run sudo update-manager -d. Rule of thumb: If a command modifies your system, it needs sudo.

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