I have built a few different version MDT images. 1803, 1903 and now the 1909.
The online versions work great, all different models of the HP's I have with the 1909. including Latest 455R G6 and 705 G5 desktop
When the systems were running the offline version (ISO built thumb drive) on all versions except the 1909, it would start and build the system with no issues. except with the 455R G6 and 705 G5.
The error happens when the drive is attempted to be formatted.
We are using RUFUS for the build to the thumb drive, tried multiple thumb drive, versions of rufus. rufus different build options.