Index: /trunk/src/VBox/Main/ConsoleImpl2.cpp
===================================================================
--- /trunk/src/VBox/Main/ConsoleImpl2.cpp	(revision 29443)
+++ /trunk/src/VBox/Main/ConsoleImpl2.cpp	(revision 29444)
@@ -2465,4 +2465,12 @@
             /* Index of last image */
             uImage--;
+
+#if 0 /* Enable for I/O debugging */
+            rc = CFGMR3InsertNode(pLunL0, "AttachedDriver", &pLunL0);                   RC_CHECK();
+            rc = CFGMR3InsertString(pLunL0, "Driver", "DiskIntegrity");                 RC_CHECK();
+            rc = CFGMR3InsertNode(pLunL0, "Config", &pCfg);                             RC_CHECK();
+            rc = CFGMR3InsertInteger(pCfg, "CheckConsistency", 0);                      RC_CHECK();
+            rc = CFGMR3InsertInteger(pCfg, "CheckDoubleCompletions", 1);                RC_CHECK();
+#endif
 
             rc = CFGMR3InsertNode(pLunL0, "AttachedDriver", &pLunL1);                   RC_CHECK();