title: Mount VHD using GRUB2 loopback command
body: <p>I need to mount a VHD file at grub2 command prompt.</p>
  
  <p>I tries using "loopback" command as shown below:</p>
  
  <pre><code>grub &gt; insmod ntfs
  grub &gt; insmod ntldr
  grub &gt; loopback loop (hd0,1)/test.vhd
  grub &gt; ls (loop)/
  error: unknown filesystem
  </code></pre>
  
  <p>I tried both "static" and "dynamic" vhd and both VHD file had ntfs partitioned data.</p>
  
  <p>I guess VHD files have some header data which makes the filesystem not recognizable after "loopback" mount. I am able to mount and access "iso" files using same set of commands.</p>
  
  <p>Is my guess correct? If so, is there a way to overcome this issue?</p>