I've used the MCT many many times. That's not the problem. Before selecting the destination, the MCT tells me I don't have enough space in the C: drive, even though I have no intention of using the C: drive (an SSD) to download it.
By the way, you can selct an ISO with both images. Before booting the installer you get a prompt that asks you which one you want to install, which is very useful for me because I usually install it in multiple computers running 64- and 32-bit OSs.
Right after this step, this happens:
Which leads me to think that regardless of my choices, the tool will write wherever it pleases, and then move the image to the destination.
Anyways, if there is no solution, I have already downloaded both images from Arch Linux, so if you choose not to reply again, thank you all for your assistance and patience!
Edited by SupermanPrime, 08 May 2018 - 09:31 PM.