Good grief, I
finally made it work.
So, today I am trying to connect my pretty new Boox to my iMac, and it's not working. The Mac will mount the drive, then immediately boot it, giving me the "you didn't eject your device properly, nyah nyah nyah" error. Over and over and over again. Tried different USB ports, tried different cables.... Of course, I plug it into my MacBook Pro, it mounts just
fine.
Finally, I yank the cable from my USB hub, and, plug the Boox in, andof course, it mounts right away!. I plug in the Sony 950, I still get an ERROR in Sony Library. Knowing what I know from this thread, I reboot the iMac, holding down the 3 + 2 keys, and open Reader Library. Plug in the 950, and voilá! It Works!!!