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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Deployed Image failed to boot.
Hi, Need some help please. I've created an image fine and deployment seems to be working, well on the server i can see the deployment take place and see the image get to 100%. The pc then reboots and attempts to boot off the hard drive and comes up with the following message bootmgr is missing. Now normally I would just run a startup repair which would fix it, but in this instance its from a fresh deployed working image so shouldnt really need to. Now just to make sure, i have recreated the template
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