Stepper control strategies

[Peter Gargano]

Floppy drives have a track 0 sense output that the
FDD controller processes and returns as a status bit 
to the driver software. Stepping out beyond track 0
serves no purpose other than stressing the mechanical
components. Grinding noises are a sign of a problem,
either in the software, the FDD circuitry, the FDD
cable, or perhaps the FDD itself.

Peter D. Hipson wrote:
Re: GM stepper control strategies

> When you boot your PC, that grinding noise you hear from the diskette drive
> is the same thing, pull the head back to the stop, then pull back more just
> to be sure.

regards, Peter Gargano