Can't get windows 10 to see the drive. How are you guys cloning it?

I have reallymine installed in windows, but when I use the command reallymine getdek \\.\PHYSICALDRIVE0 I keep getting " seek \\.\PHYSICALDRIVE0: Incorrect function" (in case github does something with the text, I am most definitely using the double \ in my command, and I've also tried \\?\PHYSICALDRIVE0 to no avail). I'm using the getdek command just to make sure my current reallymine setup works and sees the drive; the goal is to just decrypt it to an image that I can pull data from, which I hope isn't as hard as this cloning issue i'm having...

After reading a lot of the issues here, it seems like it'd be easier if I created an image of the drive and had reallymine point to that, but now I've run into the problem of how am I supposed to create an image of a drive that the OS thinks has no drive letter or partition? I've tried Clonezilla, Macrium, AOMEI, and several others, but none of them will let me create an image of the drive.

Also, I'm doing this on my desktop in windows because my first method (which was working to an extent) was using ubuntu on my laptop, but the setup made it INSANELY slow (60mb/min) and my laptop ran VERY hot, so I opted to do it via my PC, but I need to be able to use my PC, which is why I'm trying to find a windows solution to the issue.