OK ... I've got the Deployment and Imaging Tools Environment installed. I've created a dir for my WinPE files, initialized it, mounted it, copied in my BIOS-flashing executable, umounted and committed, and I'm now trying to create the ISO (instead of writing directly to a USB). MakeWinPEMedia fails with a spectacularly unhelpful:
ERROR: Failed to create "petest.iso" file.
I've confirmed that I'm running the DITE thing in an admin-level prompt window, and that I have write perms to the ISO destination. Other ideas?
Looks like the script isn't doing much "catch how this thing can fail" checking on the user's behalf.
Edit: resolved, see:
https://infosec.exchange/@tychotithonus/115041145616038133
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