Hi, my vista wim is a AIO version i made from both x86 and x64 disk i've got the same problem with Seven, and it's an original dvd (both x86 and x64). i have the same problem with nt6.x fast installer. i've see this post on reboot pro. but i can't find what i need to do exactely. temporaly i use the method of Steve6375 on the RMPrepUSB website, but unfortunatly it's work with seven, but with vista it can't find the "Sources/INSTALL.WIM" file (i think it don't load firadisk correctly). so for now i've got a working solution, but very dirty. install seven thru steve6375 method; install xp with WinNTSetup v2 (thru a winpe iso); install vista directly from my external hard disk (direct copy of all the directory to the root partition and add a BCD entry to launch the setup. it's very dirty and i'm not happy with this. i need some help. Thanks