So was mine, but the controller thought it was 10mb so had to load a device driver to access the full size.
Was fine until a friend defragged it and the driver moved out of the first 10mb. Thereafter had to keep a 360kb 5¼" drive to boot from.
That was in an XT.
I remember the sound. Also, it was on a three wheel table, and the whole thing would shake when defragging.