使用IOCTL_DISK_GET_DRIVE_GEOMETRY获取硬盘的布局

typedef struct _DISK_GEOMETRY {
  LARGE_INTEGER Cylinders;
  MEDIA_TYPE    MediaType;
  ULONG         TracksPerCylinder;
  ULONG         SectorsPerTrack;
  ULONG         BytesPerSector;
} DISK_GEOMETRY, *PDISK_GEOMETRY;


 BOOL CDisk::GetDiskInfoById(int nId, DISK_GEOMETRY* dg)
{
     TCHAR buff[512];
     _stprintf_s(buff, TEXT("\\\\.\\PhysicalDrive%d"), nId);
     HANDLE hDevice = CreateFile(buff, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
     if (hDevice == INVALID_HANDLE_VALUE)
     {
         return FALSE;
     }

     ULONG rtn;
     BOOL bResult = DeviceIoControl(hDevice,
         IOCTL_DISK_GET_DRIVE_GEOMETRY,
         NULL, 0,
         dg, sizeof(*dg),
         &rtn,
         (LPOVERLAPPED)NULL);
     CloseHandle(hDevice);

     return bResult;
}