Hi, I realize that this is an old topic, but unfortunately have the same problem with this nice device. Its disk tries to spin up three times but fails.
I have tried to connect a keyboard and enter the bios setup to select the right startup-disk, but I did not manage to start the setup. No keys worked during boot, tried F1 , F2 , F3 , F4 , DEL and some more. The keyboard itself should be fine because later on it enters the any key and it re-prompts the insert diskette text.
Replacing the disk with another one should be easy, but then again there is just an empty disk without bootfiles. Is there any chance that anyone of you can provide me with these files ? Any help would be appreciated, thank you.