Installing the test images via the USB that is created, the computers are ending up with the Generic 123XYZ name instead of the service tag. The image was created by a VM but I did set the unattend.xml to use a custom name during the USB creation process. 

Is there a way to find/customize the unattend.xml that the USB drive uses when installing the image? I looked around but couldn't find it. It looks like if I can change the unattend.xml to %SERVICE_TAG% that should work, but I can't find it. 

Just to clarify: I am creating/capturing the image from a VM, but I am not running the USB key to re-install the captured image to the VM. If the computer reboots, though, with the USB key still in it, it shouldn't change the unattend.xml on the USB, right?

Appreciate any guidance.