Index: examples/menus.c
===================================================================
--- examples/menus.c    (revision 1153)
+++ examples/menus.c    (working copy)
@@ -48,9 +48,15 @@
   int output_fd = 0;
   int dump = 0, tt_dump = 0;
 
+  if( argc < 2 )
+  {
+    printf("Specify DVD device\n");
+    return 1;
+  }
+
   /* open dvdnav handle */
   printf("Opening DVD...\n");
-  if (dvdnav_open(&dvdnav, "/dev/dvd") != DVDNAV_STATUS_OK) {
+  if (dvdnav_open(&dvdnav, argv[1]) != DVDNAV_STATUS_OK) {
     printf("Error on dvdnav_open\n");
     return 1;
   }