Index: sources/gui/GuiView.cpp
===================================================================
diff -u -r79a6cfcb10472261f3ec26eaf0baf6f1245cd311 -r86e9dfbff50cb7e16fd94c16c1c818cef3b47eac
--- sources/gui/GuiView.cpp	(.../GuiView.cpp)	(revision 79a6cfcb10472261f3ec26eaf0baf6f1245cd311)
+++ sources/gui/GuiView.cpp	(.../GuiView.cpp)	(revision 86e9dfbff50cb7e16fd94c16c1c818cef3b47eac)
@@ -58,6 +58,10 @@
     connect(&_GuiController, SIGNAL(didUSBDriveRemove()),
             this           ,   SLOT( onUSBDriveRemove()));
 
+    // USB Drive
+    connect(&_DeviceController, SIGNAL( didUSBSpaceChange(bool, qint64, qint64, quint8)),
+            this              ,   SLOT(  onUSBSpaceChange(bool, qint64, qint64, quint8)));
+
     // SD Card
     connect(&_GuiController, SIGNAL(didSDCardStateChange(bool,bool)),
             this           ,   SLOT( onSDCardStateChange(bool,bool)));
@@ -132,8 +136,8 @@
 {
     // disabled coco begin validated: This needs user interaction to plug-in USB device
     // has been tested manually
-    usbReady    (true );
-    usbRemoved  (false);
+    usbIsReady  (true );
+    usbIsRemoved(false);
     emit didUSBDriveMount ();
 }
 // disabled coco end
@@ -147,8 +151,8 @@
 {
     // disabled coco begin validated: This needs user interaction to plug-in USB device
     // has been tested manually
-    usbReady    (false);
-    usbRemoved  (false);
+    usbIsReady  (false);
+    usbIsRemoved(false);
     emit didUSBDriveUmount();
 }
 // disabled coco end
@@ -162,8 +166,8 @@
 {
     // disabled coco begin validated: This needs user interaction to plug-in USB device
     // has been tested manually
-    usbReady    (false);
-    usbRemoved  (true );
+    usbIsReady  (false);
+    usbIsRemoved(true );
     emit didUSBDriveRemove();
 }
 // disabled coco end
@@ -205,24 +209,21 @@
  */
 void GuiView::onExport()
 {
-    // disabled coco begin validated: This needs user interaction to plug-in USB device
-    // has been tested manually
     emit didExport();
+    exportRunning(false);
 }
-// disabled coco end
 
+
 /*!
  * \brief   GuiView::doExportLog
  * \details emits didExportLog signal to notify other classes (GuiController)
  *          , the User requested to export the log.
  */
 void GuiView::doExportLog()
 {
-    // disabled coco begin validated: This needs user interaction to plug-in USB device
-    // has been tested manually
+    exportRunning(true);
     emit didExportLog();
 }
-// disabled coco end
 
 /*!
  * \brief   GuiView::onSDCardSpaceChange
@@ -247,3 +248,15 @@
     sdIsLow     ( vPercent <= Storage::Available_Space_Percent  );
 }
 // disabled coco end
+
+void GuiView::onUSBSpaceChange(bool vReady, qint64 vTotal, qint64 vAvailable, quint8 vPercent)
+{
+    // has been tested manually
+    /// DEBUG: qDebug() << vReady << vTotal << vAvailable << vPercent << Storage::Available_Space_Percent;
+    usbTotal    ( vTotal                                        );
+    usbAvail    ( vAvailable                                    );
+    usbPercent  ( vPercent                                      );
+    usbIsReady  ( vReady                                        );
+    // TODO : the space check should also be done for the USB as destination but needs calculation has will be done later.
+    // usbIsLow     ( vPercent <= Storage::Available_Space_Percent  );
+}