diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index fc25b4f29..8e450f497 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -273,7 +273,7 @@ bool GUI_App::on_init_inner()
         this->obj_manipul()->update_if_dirty();
 
 
-		RemovableDriveManager::get_instance().update(wxGetLocalTime(), true);
+		//RemovableDriveManager::get_instance().update(wxGetLocalTime(), true);
 
 
         // Preset updating & Configwizard are done after the above initializations,
diff --git a/src/slic3r/GUI/RemovableDriveManager.cpp b/src/slic3r/GUI/RemovableDriveManager.cpp
index 49bf59e11..284c224fb 100644
--- a/src/slic3r/GUI/RemovableDriveManager.cpp
+++ b/src/slic3r/GUI/RemovableDriveManager.cpp
@@ -425,6 +425,10 @@ bool RemovableDriveManager::update(const long time, bool check)
 			return false; // return value shouldnt matter if update didnt run
 		}
 	}
+    if(check)
+    {
+        m_rdmmm->log("update");
+    }
 	search_for_drives();
 	if(check)check_and_notify();
 	return !m_current_drives.empty();
@@ -466,6 +470,7 @@ void RemovableDriveManager::check_and_notify()
 	//std::cout<<"drives count: "<<m_drives_count;
 	if(m_drives_count != m_current_drives.size())
 	{
+        m_rdmmm->log("drives count not same");
 		//std::cout<<" vs "<< m_current_drives.size();
 		if(m_callbacks.size() != 0 && m_drives_count > m_current_drives.size() && m_last_save_path != "" && !is_drive_mounted(m_last_save_path))
 		{
diff --git a/src/slic3r/GUI/RemovableDriveManager.hpp b/src/slic3r/GUI/RemovableDriveManager.hpp
index 49df41482..9eea355f7 100644
--- a/src/slic3r/GUI/RemovableDriveManager.hpp
+++ b/src/slic3r/GUI/RemovableDriveManager.hpp
@@ -80,6 +80,7 @@ public:
     ~RDMMMWrapper();
     void register_window();
     void list_devices();
+    void log(const std::string &msg);
 protected:
     void *m_imp;
     //friend void RemovableDriveManager::inspect_file(const std::string &path, const std::string &parent_path);
diff --git a/src/slic3r/GUI/RemovableDriveManagerMM.mm b/src/slic3r/GUI/RemovableDriveManagerMM.mm
index 7a1108541..45bd21bcf 100644
--- a/src/slic3r/GUI/RemovableDriveManagerMM.mm
+++ b/src/slic3r/GUI/RemovableDriveManagerMM.mm
@@ -61,6 +61,10 @@ void  RDMMMWrapper::list_devices()
 		}
     }
 }
+void RDMMMWrapper::log(const std::string &msg)
+{
+    NSLog(@"%s", msg.c_str());
+}
 }}//namespace Slicer::GUI
 
 /*