Just tested it now on Mojave PB9 and it worked perfectly with my WD Black NVMe drive. The instructions you provided in post 9 were perfect. Now it shows up as Removable: No in System Profiler, shows the normal internal drive icon in Finder (with no Eject button), and has disappeared from the desktop.Nice work, cdf, and thanks for sharing it with us. I know some people didn't care about it since it's not really a problem that it was showing as a removable drive, but I for one appreciate seeing an internal drive show up as internal. And since Apple's not gonna fix it I'm glad you figured out how to do it. Kudos!

			
			
