Trin 1: Du åbner cmd (køre som administrator), then you type
dism /online /get-targeteditions
Trin 2: You copy and paste this code in cmd
If you want to upgrade to Windows Server 2012 R2 Datacenter du skriver:
dism /online /set-edition:serverdatacenter /produktnøgle:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /accepteula
Bemærk:
hvis du ser "opgradering mislykkedes", du genstarter din Windows Server 2012 R2. It will upgrade Windows Server 2012 R2 Evaluation to Datacenter.