First, a LOT of thanks for the fabulous guide. I've searched the forum before asking but haven't found what i was looking for so please excuse me if my question has already been answered. I've almost done what I expected, but there's still one thing which annoys me : In winnt.sif, section [Data], the "AutoPartition" fonction disturbs me... In the ref.chm, they say it "Installs Windows to the first available partition that has adequate space for a Windows installation and does not already contain an installed version of Windows." Okay, and it's not what I want. But if i put this to 0, what will the install do ? I wish i could specify in the .sif which disk to format (1:0 for example) and then to use for the install. Or, if it is possible, it would be cool to manually do this part of the install But i've not seen (in the help) any switch that could allow me to do this (i.e. a AutoPartition=2, which would enter the classic (blue, not graphical) interactive mode) The only thing gien by the help is that "If you do not set the value, text-mode Setup installs Windows on the partition where $WIN_NT$.~LS is located." Could someone explain this or suggest me something else ? Thanks.