Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/vm/VBoxVMSettingsHD.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/vm/VBoxVMSettingsHD.cpp	(revision 29895)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/vm/VBoxVMSettingsHD.cpp	(revision 29896)
@@ -2705,6 +2705,5 @@
             bool isConverted = false;
             int number = stringNumber.toInt (&isConverted);
-            if (isConverted && number > maxNumber)
-                maxNumber = number;
+            maxNumber = isConverted && (number > maxNumber) ? number : 1;
         }
     }