Hi, did you finally made it work ? I have a similar issue with sysprep on 2 HP laptops, the difference is my sysprep doesn't stop, it just seems to do nothing even after an entire night. I tried to fill the massstorage before with -bmsd, or just to let sysprep do it, i tried with a blank list and the buildmassstoragesection=No... always the same, no sysprep activity after a few minutes.