Adprep finished successfully. Status/Consequence This Active Directory Domain Controller, the schema master, and the infrastructure ...

Adprep finished successfully.
[Status/Consequence]
This Active Directory Domain Controller, the schema master, and the infrastructure master within this forest all have been properly prepared for upgrade to Windows Server 2008 R2.
[User Action]
You can install Windows Server 2008 R2 on the remaining Active Directory Domain Controllers within this forest.