Ebola_One

I'm having the same problem, I don't want to specifiy any particular partition size, but I want windows to install on the first partition available (It's a huge assumption, but I know that the first partition will always be the one I want to have windows installed to) Is there anyway to do this? Here's my Winnt.Sif (with all the uneccessary crap taken out): [Data] AutoPartition=1 MsDosInitiated="0" UnattendedInstall="Yes" [Unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=Yes TargetPath=\WINDOWS UnattendSwitch=Yes WaitForReboot=No FileSystem=ConvertNTFS Repartition = No [GuiUnattended] AdminPassword=* EncryptedAdminPassword=NO OEMSkipRegional=1 TimeZone=290 OemSkipWelcome=1 AutoLogon=Yes AutoLogonCount=5 Have I got a setting wrong? When I change Repartition to equal Yes, it just brute force deletes the partitions & formats away happily, which I understand, but when I set it to No, shouldn't it just re-format the first partition? or is that what WinPE is for? [edit] Do I need to have a partition already formatted for use before i start the windows unattended install? [/edit] Thanks.