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)