IOCTL_DISK_GET_DRIVE_GEOMETRY_EX IOCTL (winioctl.h)
Retrieves extended information about the physical disk's geometry: type, number of cylinders, tracks per cylinder, sectors per track, bytes per sector, and size.
To perform this operation, call the DeviceIoControl function with the following parameters.
BOOL DeviceIoControl(
(HANDLE) hDevice, // handle to device
IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, // dwIoControlCode
NULL, // lpInBuffer
0, // nInBufferSize
(LPVOID) lpOutBuffer, // output buffer
(DWORD) nOutBufferSize, // size of output buffer
(LPDWORD) lpBytesReturned, // number of bytes returned
(LPOVERLAPPED) lpOverlapped // OVERLAPPED structure
);
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows XP [desktop apps only] |
Minimum supported server | Windows Server 2003 [desktop apps only] |
Header | winioctl.h (include Windows.h) |
See also
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