I agree - the door doesn't look anything at all like a Disk II. I've had several dozen Disk II's, and they all had stepper motors with spiral grooved disks. Many, many drives were based around the SA390 and 400 mechanics, and some of them look quite dissimilar from the outside despite the fact that their internal mechanics are very similar. Kai - you mention on your web page that when you turn the machine on you go into a boot ROM monitor. What are the prompts like? Any copyright notices? Menus? Any "obvious" commands? Tim.