Change the autopartition=1 This is what I use and works fine. press any key to boot to cd then sit back [Data] AutoPartition=1 MsDosInitiated="0" UnattendedInstall="Yes" [unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=Yes TargetPath=\WINDOWS FileSystem=* UnattendSwitch="yes" WaitForReboot="No" DriverSigningPolicy=Ignore OemPnPDriversPath="" KeyboardLayout="United Kingdom" Repartition=Yes