I followed the instructions, added the missing amd.conf file, and it looks like it works. But it doesn’t. Something like the cdrom device gets mounted, but nope. There’s nothing there.
The author replied to me that he would amend his article to include a reference to amd.conf, but I think it needs more than that.
Following bad information doesn’t cost anything but time, in a sense, but it devalues the good stuff.