Update msdos page formatting

www/msdos.html

@@ -21,13 +21,20 @@ floppy image files directly.<p>
 
 The last version of MS-DOS from the Windows 3.1 era, before Windows 95.<p>
 
-&#0164; <a href="download?project=DOS&file=MS-DOS-6.22.zip">Download</a> (.zip, 3.5 MB)
+&#0164; <a href="/download?project=DOS&file=MS-DOS-6.22.zip">Download</a> (.zip, 3.5 MB)
 
 <h2>Windows for Workgroups 3.11</h2>
 
 The first version of Windows to support TCP/IP networking.<p>
 
-&#0164; <a href="download?project=DOS&file=WfW-3.11.zip">Download</a> (.zip, 10.3 MB)
+<strong>Disk images (*.img files) for use with VirtualBox or flashing to floppy disks:</strong><p>
+
+&#0164; <a href="/download?project=DOS&file=WfW-3.11.zip">Download</a> (.zip, 10.3 MB)<p>
+
+<strong>Unpacked disk images (ZIP file containing all files from all disks in one folder,
+maybe useful for DOSBox installations):</strong><p>
+
+&#0164; <a href="/download?project=DOS&file=WfW-3.11-unpacked.zip">Download</a> (.zip, 11 MB)
 
 <h2>Hardware Drivers for VirtualBox</h2>
 
@@ -53,4 +60,4 @@ For tips, tricks, or to leave comments, see the relevant blog post "<a href="/bl
     header=False,
 ) | safe }}
 
-{% endblock %}
+{% endblock %}