title: Visual Studio 2005 Setup project application folder default location on potentially non-existent volume
body: <p>I have a Visual Studio 2005 solution that includes a setup project. The setup project specifies "d:\somefolder" as the Application Folder DefaultLocation property.  When installing on a machine without any partitions mapped to "d:", the resulting installer craps out with the message </p>
  
  <blockquote>
    <p>"The volume d:\ is currently unavailable. Please select another."</p>
  </blockquote>
  
  <p>Trouble is, you don't actually get a chance to select a different install location (on an existing volume). What settings should I use to enable the user of the installer to change the install path, while keeping the default as d:\some_folder?</p>