Wie verbinden zu erste Diskette Informationen

   #include <windows.h>
   #include <stdio.h>
   #include <winioctl.h>

   DISK_GEOMETRY SupportedGeometry[20];
   DWORD SupportedGeometryCount;

   VOID
   GetSupportedGeometrys( HANDLE hDisk )
   {
      DWORD ReturnedByteCount;

      if( DeviceIoControl(
             hDisk,
             IOCTL_DISK_GET_MEDIA_TYPES,
             NULL,
             0,
             SupportedGeometry,
             sizeof(SupportedGeometry),
             &ReturnedByteCount,
             NULL
         ))
         SupportedGeometryCount = ReturnedByteCount / 
                                  sizeof(DISK_GEOMETRY);

      else SupportedGeometryCount = 0;
   }

   VOID
   PrintGeometry( PDISK_GEOMETRY lpGeometry )
   {
      LPSTR MediaType;

      switch ( lpGeometry->MediaType ) {
         case F5_1Pt2_512:
            MediaType = "5.25, 1.2MB,  512 bytes/sector";
            break;
         case F3_1Pt44_512:
            MediaType = "3.5,  1.44MB, 512 bytes/sector";
            break;
         case F3_2Pt88_512:
            MediaType = "3.5,  2.88MB, 512 bytes/sector";
            break;
         case F3_20Pt8_512:
            MediaType = "3.5,  20.8MB, 512   bytes/sector";
            break;
         case F3_720_512:
            MediaType = "3.5,  720KB,  512 bytes/sector";
            break;
         case F5_360_512:
            MediaType = "5.25, 360KB,  512 bytes/sector";
            break;
         case F5_320_512:
            MediaType = "5.25, 320KB,  512 bytes/sector";
            break;
         case F5_320_1024:
            MediaType = "5.25, 320KB,  1024 bytes/sector";
            break;
         case F5_180_512:
            MediaType = "5.25, 180KB,  512 bytes/sector";
            break;
         case F5_160_512:
            MediaType = "5.25, 160KB,  512  bytes/sector";
            break;
         case RemovableMedia:
            MediaType = "Removable media other than floppy";
            break;
         case FixedMedia:
            MediaType = "Fixed hard disk media";
            break;
         default:
            MediaType = "Unknown";
            break;
      }
      printf("    Media Type %s\n", MediaType );
      printf("    Cylinders %d, Tracks/Cylinder %d, Sectors/Track %d\n",
             lpGeometry->Cylinders.LowPart, lpGeometry->TracksPerCylinder,
             lpGeometry->SectorsPerTrack
            );
   }

   void main( int argc, char *argv[], char *envp[] )
   {
      HANDLE hDrive;
      UINT i;

      hDrive = CreateFile(
                      "\\\\.\\a:",
                      0,
                      FILE_SHARE_READ,
                      NULL,
                      OPEN_ALWAYS,
                      0,
                      NULL
                      );
      if ( hDrive == INVALID_HANDLE_VALUE )
      {
         printf( "Open failed: %d\n", GetLastError() );
         ExitProcess(1);
      }

      GetSupportedGeometrys( hDrive );

      printf( "\nDrive A supports the following disk geometries\n" );
      for( i=0; i<SupportedGeometryCount; i++ )
      {
          printf("\n");
          PrintGeometry( &SupportedGeometry[i] );
      }
      printf("\n");
   }