Here's how mine is setup. It allows you to select the partitions as well as file system to use. [Data] AutoPartition=0 MsDosInitiated="0" UnattendedInstall="Yes" AutomaticUpdates=yes [unattended] UnattendMode=FullUnattended OemSkipEula=Yes UnattendSwitch="Yes" OemPreinstall=Yes TargetPath=\WINDOWS FileSystem=* KeyboardLayout="US"