I had to test a program on Windows using a particular drive letter.

So I was thinking of mounting an ISO file, or a VeraCrypt volume, and have a drive with that particular drive letter on my machine. And then I remember something ... old ... really old.

Back in the early nineties, I often had to do something similar on MS DOS. I used the SUBST command.

It still exists on Windows. You provide an unused drive letter and a path on an existing drive, and voilà:

Didier Stevens
Senior handler
Microsoft MVP
blog.DidierStevens.com DidierStevensLabs.com