They used to fit nice little steppers that could be extracted back in the days of 5 1/4" and 8" but that all went away with the 3.5" drives when the motor became part of the steel pressing.
The original IBM PC came with a Tech Ref manual that included the circuit for the floppy drive controller and full code for the BIOS that drove it. I still have them.
There are Home and Seek commands that will turn the motor, but not very far![]()


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