I think I had some kind of extreme luck (and some bad luck after).

By disappointment I tried to swap a scsi drive in to see if it works: The thing made noises like hell for 1 minute.

But suddently: "welcome to mac os" and then error #3;

Tried to boot with Shift key pressed, and tadam, a desktop.

BUT WHY DOES THIS WORK ??? THIS IS A RANDOM DRIVE I FOUND IN A BOX.

Anyway, tried to bench the floppy drive, and guess what, formatted a floppy with it, says "793kb free"...

so I think this mac got swapped with a 800kb floppy drive...

Does this sounds possible ?

Edit: checked the ref: it's a MP-F51W...... going to look for a 1.44 drive, if someone has one to sell ...