Tripredacus, I am curious how you do this. Is it the 32/64 nature of setup.exe that is causing the 'Load driver' function to fail to find a mass storage driver? Is this a work around for that problem? Thanks and enjoy, John. I use Imagex. I do have normal DVDs that use setup.exe, but their install.wim only have 1 image in them. The only time I used one with multiple in the install.wim was with WDS which was I saw this issue where the Setup boot.wim from 7PRO64 would not display 32bit images. From my understanding, setup.exe uses drvload to install the mass storage drivers. As far as drivers not being found, I've encountered this before, but usually to do with either a corrupted ISO or with poorly written drivers. Either the 32bit or 64bit boot.wim does not support WoW. So if you got that error while running a program on the 64bit boot.wim, then your program or required libraries were not 64bit.