C / C++ / MFC

HANDLE  hCD, hFile;
DWORD   dwNotUsed;


hFile = CreateFile ("sector.dat",
                    GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
                    FILE_ATTRIBUTE_NORMAL, NULL);

hCD = CreateFile ("\\\\.\\D:", GENERIC_READ,
                  FILE_SHARE_READ|FILE_SHARE_WRITE,
                  NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
                  NULL);

if (hCD != INVALID_HANDLE_VALUE)
{
   DISK_GEOMETRY         dgCDROM;
   PREVENT_MEDIA_REMOVAL pmrLockCDROM;

   pmrLockCDROM.PreventMediaRemoval = TRUE;
   DeviceIoControl (hCD, IOCTL_DISK_MEDIA_REMOVAL,
                    &pmrLockCDROM, sizeof(pmrLockCDROM), NULL,
                    0, &dwNotUsed, NULL);

   if (DeviceIoControl (hCD, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &dgCDROM, sizeof(dgCDROM), &dwNotUsed, NULL))
   {
      LPBYTE lpSector;
      DWORD  dwSize = 2 * dgCDROM.BytesPerSector;  // 2 sectors

      lpSector = (LPBYTE)VirtualAlloc (NULL, dwSize, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE);

      SetFilePointer (hCD, dgCDROM.BytesPerSector * 16,
                      NULL, FILE_BEGIN);

      if (ReadFile (hCD, lpSector, dwSize, &dwNotUsed, NULL))
         WriteFile (hFile, lpSector, dwSize, &dwNotUsed, NULL);

      VirtualFree (lpSector, 0, MEM_RELEASE);
   }

   pmrLockCDROM.PreventMediaRemoval = FALSE;
   DeviceIoControl (hCD, IOCTL_DISK_MEDIA_REMOVAL,
                    &pmrLockCDROM, sizeof(pmrLockCDROM), NULL,
                    0, &dwNotUsed, NULL);

   CloseHandle (hCD);
   CloseHandle (hFile);
}

char *s = (char *)malloc(1024);
DWORD dwBytesRead;
HANDLE hFile;

hFile = CreateFile("\\\\.\\D:", GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
ReadFile(hFile, s, 1024, &dwBytesRead, NULL);

CloseHandle(hFile);
free(s);