Tips - Transform trial Windows version to RTM

If you need to transfort your evaluation windows to RTM here are relative commands:

1. Check the version installed:
 

DISM / online / Get-CurrentEdition

If you want to verify that version can upgrade the system:

 
DISM / online / Get-TargetEditions

To upgrade you need to type:

 
DISM / online / Set-Edition: ServerVersion / ProductKey: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX / AcceptEula


[from http://epansecco.net/2014/10/21/windows-server-2012-r2-da-evaluation-version-a-rtm/]