title: USB folder and SD card folder
body: <p>Is there some way to distinguish following two folders using C++ Builder code?</p>
  
  <ol>
  <li>folder of USB flash drive</li>
  <li>folder of SDcard (SDHC)</li>
  </ol>
  
  <p>I am using C++ Builder XE4. Using the C++ Builder, I wonder I can make software to distinguish the above two folders.</p>
  
  <p>I describe the problem below.</p>
  
  <p>I have a note book computer which has USB connector and SD card connector. 
  I would like to save some file into the folder of SD card. But if there is no SD card mounted, on the other hand there is some USB flash drive mounted, it should not write the file into USB flash drive by mistake. 
  So I would like to distinguish (recognize) the SD card and the USB flash drive folders.</p>
  
  <p>I would like to know some keywords on these to investigate further through the internet by myself.</p>