Index: /trunk/src/VBox/Frontends/VirtualBox/src/VBoxMediaManagerDlg.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/VBoxMediaManagerDlg.cpp	(revision 37893)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/VBoxMediaManagerDlg.cpp	(revision 37894)
@@ -1495,6 +1495,14 @@
     QTreeWidget *tree = currentTreeWidget();
 
-    if (mDoSelect && selectedItem (tree) && mButtonBox->button (QDialogButtonBox::Ok)->isEnabled())
-        accept();
+    if (mDoSelect)
+    {
+        if (selectedItem (tree) && mButtonBox->button (QDialogButtonBox::Ok)->isEnabled())
+            accept();
+    }
+    else
+    {
+        if (currentTreeWidgetType() == VBoxDefs::MediumType_HardDisk)
+            doModifyMedium();
+    }
 }