IOCTL_CDROM_SET_SPEED control code
Sets the spindle speed of the CD-ROM drive.
The buffer at Irp->AssociatedIrp.SystemBuffer contains either a CDROM_SET_SPEED structure or a CDROM_SET_STREAMING structure. These two structures have the same first member: an CDROM_SPEED_REQUEST enumeration value. Caller uses this enumeration value to specify which of these two structures is in the input buffer.
Parameters.DeviceIoControl.InputBufferLength in the I/O stack location indicates the size, in bytes, of the buffer.
The Information field is set to zero. The Status field is set to STATUS_SUCCESS, if the operation succeeds, to STATUS_INFO_LENGTH_MISMATCH (ERROR_BAD_LENGTH) if the input buffer was too small, to STATUS_INVALID_DEVICE_REQUEST (ERROR_INVALID_FUNCTION), if the device does not support the request, or the device is not a Mount Ranier reWriteable (MRW)-compliant device, and to STATUS_INVALID_PARAMETER (ERROR_INVALID_PARAMETER, if the indicated request type is invalid.
For an explanation of function and purpose of this request, see CD-ROM Set Speed.