Windows (Server 2012) Unattended Problems (Partitioning, Language, EULA)

Windows Server 2012 - WDS installed and configured to deploy Windows Server 2012 on several clients.

Two problems are occuring during / after installation of Windows 2012 via WDS:

• If the Server had Linux installed before the reinstallation, Windows Setup failes with the Error Message, that it can not read the partitions (WillWipeDisk is set to true) - is there a way (exept custom WindowsPE image) to destroy all partitioning before the windows setup begins to read the partitions?

• If no partitioning error occurs (becouse no linux partitions are on the hdds) the installation will success. After the installation is done, the first screen is the language selection (but the language is already defined in the xml), and after that the next screen is to accept the eula :-( (which is alo defined in the xml)

Seems i have some missconfigurations in my xml's (?):

Client XML

Windows Server 2012 Image XML

I tried several configrations right now, but none of them seem to accept the language and eula config.

The weird thing is, that those configurations (eula and language) does work if we do not work with an WDS Server (Old way, without WDS - one unattended XML for all configurations).