Okay, I did some testing on the live system, and both my Intel A380 that drives my displays, and my Nvidia RTX A4500 that does CUDA work, worked.
I ran my own CUDA tests, as well as GeekBench GPU tests (Intel, Nvidia), and everything worked as it should.
I was not able to install, and created an issue on the readymade github.
Finally, some feedback (sorry for the line patterns, 
that’s a moire ) :
- Serial numbers on drives would be really helpful if you have more than one of a vendor/model number:
- The indication that a drive is selected is too subtle. Maybe outline the tile with black, or another contrasting color.
- The confirmation screen needs words, since you are about to wipe a drive.
Let me know if these comments belong somewhere else.