DRIVATTR

Purpose: Sets additional physical parameters of a disk device.

Syntax:  DRIVATTR =</D:dd> <[/T][/C][/S:xx]>

Parameters:

/D:dd - defines the device logical number

/T    - specifies that the device controller can process input-output
        enquiries that require addressing several cylinders. Applicable
        only to IDE controllers, as a rule.
        WARNING! Not recommended to use when running disk cache programs,
        e.g. SMARTDRV.EXE and when loading MS-Windows 3.1 in enhanced
        mode.

/C    - Disables system interference over diskette access control. With
        this key PTS-DOS will not support non-standard diskette formats.

/S:xx - sets the number of rotations per second for a diskette. At boot,
        the system sets the following values:
        for a 360K drive - 5 r.p.s.
        for a 1.2M drive - 6 r.p.s.
        for 3,5" drives 720K/1.44M/2.88M - 5 r.p.s.
        The parameter is used for calculating GPL - the filling gap
        between sectors on a diskette track.