Mac OS 9
Data Fields
DriverGestaltMediaInfoResponse Struct Reference

#include <DriverGestalt.h>

Data Fields

UInt32 numberBlocks
 
UInt32 blockSize
 
SInt16 mediaType
 

Detailed Description

The DriverGestaltMediaInfoResponse is returned by a disk driver in response to a kdgMediaInfo DriverGestalt request. This allows a disk driver to tell callers the physical block size, the number of blocks that are of that size, and the media type for a given device.

A disk driver must look at the ioVRefNum field of the DriverGestaltParam to determine what disk drive this call is for. This is a per-drive call, not a per-driver call.

On drives that support ejectable media, the response can change depending on what media is currently in the drive.

The documentation for this struct was generated from the following file: