Windows installation, no drive

Hi all, so I stumbled on one of Vosk’s videos about GPU mining:

So I’ve got the parts and I got the thing powered and turned on. Other than having Windows on the USB instead of Linux, its pretty much the same. I used this video to learn how to install windows 10 on a USB:

I get the rig powered and it loads the basic Windows installation until it asks for the destination (10:25 in the second video), on mine there isn’t any destinations available. Any idea where I went wrong or how I can fix it?

It sounds like it can’t find a drive. Can you take the hard drive you’re trying to install on and put it into a working machine to see if it shows up? It could be a bad drive or maybe it needs to be formatted.