PE Builder USB drive corrupt

PE Builder USB drive corrupt

When I use PE Builder to make a USB bootable drive for the OS Deployer Agent, it loads up DISM and Diskpart as part of its processes, and seems to successfully copy files, but the resulting drive is not formatted, it appears as RAW and is not bootable.

This happened on two different machines, both with the Microsoft PE toolkits installed and working. Partitioning/formatting the disks before building the PE makes no difference. I am able to create .iso files using the same buolder with no problems.
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