DOS Fn 440dH CL=42H: IOCTL Format Track on Logical Drive

                                                         Compatibility: 3.2+ 
 Expects: AX    440dH
          BX    drive (0=default, 1=A, 2=B, etc.)
          CL    42H
          CH    08H (device category: block device)
          DS:DX addr of an IoctlFmtVrfyTrackRec identifying the head and
                cylinder number to format.
 Returns: AX    error code  if CF is set to CY
    Info: Formats and verifies the specified track on a disk.  Use
          fn 440dH 40H (set device parms), if necessary to coerce the
          driver into accepting a non-default track layout.

See Also: Fn 44H (IOCTL)
          Fn 440dH (generic IOCTL for block devices)
          Fn 440dH 41H (write disk track)
          Fn 440dH 61H (read disk track)
          Fn 440dH 62H (verify disk track)
          Generic IOCTL Data Packets
          DOS Functions