Inplace Upgrade

2008R2 Foundation zu Standard

Dism /online /Set-Edition:ServerStandard /ProductKey:YC6KT-GKW9T-YTKYR-T4X34-R7VHC

2008R2 Standard zu Enterprise

DISM /online /Set-Edition:ServerEnterprise /ProductKey:489J6-VHDMP-X63PK-3K798-CPX3Y

DISM /online /Get-CurrentEdition

DISM /online /Get-TargetEditions

Eine Übersicht aller Product Keys ist hier zu finden:

https://docs.microsoft.com/en-us/previous-versions//ff793421(v=technet.10)