You might be able to use loop-mounting (man losetup) to make the kernel forget about the device type, and treat the disc as a different kind of drive. It’s likely not going to work, but it’s worth trying. If you know programming and you are searching for a new rabbit hole, you can also look into fuse and write your own filesystem. It might be fun with a dvd+rw!

I’ll get a steam frame even at the inflated prices… It runs linux, seems quite open, and it not made by facebook. I’m already sold on just that. I also fear though it’ll sell out almost immediately 🙁