Hello to all. I'm trying to do a clean install of Oem XP Pro via an answer file. No drivers or apps install so it should be a straigthforward task ... not so. What I have: Unattend.bat (vars substituted below) and unattend.txt on floppy disk, XP Pro Oem on CD drive: F:\i386\winnt32 /s:F:\i386 /unattend:.\unattend.txt /copysource:lang ;SetupMgrTag [Data] AutoPartition=0 MsDosInitiated="0" UnattendedInstall="No" [Unattended] UnattendMode=ProvideDefault Repartition=No FileSystem = * OemSkipEula=Yes OemPreinstall=No TargetPath=WinXP What happens: Start setup batch from cmd under existing XP (which I want to discard), press F6 and install Promise SATA driver, finishes copying files and reboots 2nd time. Then it shows me the partition table and when instructed to delete C: it answers it can't do it because it "contains temporary setup files" that it needs to complete installation. P.S. I have two additional partitions. Conclusion: I've been trying to install for two days now, reduced automation of the processes, quit the intention of automating drivers install, added Repartition=No, FileSystem = * after reading another post to this forum. Tried variations of Autopartition and Msdosinitiated. The problem subsists. I would be happy with a pre-setup format of C: but, given the SATA drive and the need for some kind of DOS to start setup from I'm guessing it would be more complicated. Help me please