title: What is the meaning of "\\\\.\\C:" and "\\\\.\\PhysicalDrive0" in CreateFile?
body: <p>I have read the code as following:</p>
  
  <pre><code>CreateFile("\\\\.\\PhysicalDrive0", 
        0, 
        FILE_SHARE_READ
        NULL, 
        OPEN_EXISTING,  
        0, 
       NULL);  
  
  CreateFile("\\\\.\\C:",
          GENERIC_READ|GENERIC_WRITE,
          FILE_SHARE_READ | FILE_SHARE_WRITE,
          NULL,
          OPEN_EXISTING,
          0,
          NULL);
  </code></pre>
  
  <p>I do not understand the meaning of the path:</p>
  
  <pre><code>"\\\\.\\C:"
  \\\\.\\PhysicalDrive0
  </code></pre>
  
  <p>Could you please help?</p>
  
  <p>Thanks for your help</p>