title: USB drive Letter finder
body: <p>I have this script that checks for a certain USB and then opens a file on it. However, now I need it to check only for the drive letter of the USB  inserted so. However I don't really know how to do that and searches online returned nothing that could help me. 
  This is the script I have right now:</p>
  
  <pre><code>@echo off
  :loop
  if exist D:\ (goto Load) else (goto loop)
  :Load
  
  D:
  start Loader1.exe
  goto Finish
  
  :Finish 
  exit
  </code></pre>