Hello, After I read many threads through many forums, incl. MS one, and before I go nuts, I'm trying to get info here. I'm quite new to 7 (yes, I know : 2009...), but have some good knowledge of XP that I installed many times on many computers with many tweaks, using the unattend (yet, winnt.sif) method (nLite caused too much trouble). As I wrote before, I read a lot before ending to post here, including WAIK help. I don't own a running 7 system, I'm currently working on a XP sp3 system and do all my testings by physically swapping between my system disk and a blank one. I downloaded the WAIK and installed it on to my XP machine, prepared a usb stick so it can boot 7 and used the 32 bits 7 DVD I bought together with the licence key. It's all authentic. Using WAIK, I created an AutoUnattended.xml file that I copied at the root of my stick - here it is : What I intend to do : Wipe the disk Create an active NTFS System reserved partition, 200 MB Create a primary NTFS Windows (C:\) 32 GB partition Create an extended partition which will hold the 3 following ones Create a logical NTFS 10 GB Programs (D:\) partition Create a logical NTFS 20 GB Profiles (E:\) partition Create a logical NTFS Misc (F:\) partition with the remainig space. All Windows related stuff must go to C:\ All programs must go to D:\ All profiles related stuff must go to E:\ My XP was configured that way and still works fine 9 years later For some unknown reason, it doesn't work the way it ought to : the partitions aren't formatted, the last one isn't even created, and even if I format them manually I am asked to check for the source files availability. But... but if I create only 4 primary NTFS partitions (System, C:\, D:\ and E:\), it will install almost correctly (programs stuff to C:\ instead of D:\, but profiles on E:\, as expected). I spent almost 3 weeks trying to understand what I may have done wrong, reading threads, hoping I had found the solution... now, I'm at the point I'm going to pick whatever I can find around and bash it all. Why doesn't it work, though according to the waik help and other topics I read to and fro, it ought to ? Someone to help me see what I did wrong / didn't understand correctly (and help cure my headache) ? Thanks in advance, and sorry for the length, J.-L.