Index: sources/ApplicationController.cpp
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/ApplicationController.cpp	(.../ApplicationController.cpp)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/ApplicationController.cpp	(.../ApplicationController.cpp)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -145,7 +145,10 @@
             this            ,   SLOT( onExport          ()));
     connect(&_Logger        , SIGNAL(didExportStat      (quint32, const QString &, quint8)),
             this            ,   SLOT( onExportStat      (quint32, const QString &, quint8)));
+    connect(&_Logger        , SIGNAL(didLogIOFailed         ()),
+            this            , SIGNAL(didIOFailedLogs        ()));
 
+
     // Settings - move to application thread
     connect(this, SIGNAL(didSettingsInit()),
             this,   SLOT( onSettingsInit()));
Index: sources/ApplicationController.h
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/ApplicationController.h	(.../ApplicationController.h)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/ApplicationController.h	(.../ApplicationController.h)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -134,6 +134,8 @@
     void didSDCardSpaceChange(bool vReady, qint64 vTotal, qint64 vAvailable, quint8 vPercent);
     void didSDCardSpaceTooLow(quint8 vAvailablePercent);
 
+    void didIOFailedLogs();
+
     void didExport        ();
     void didExportStat    (quint32 vIndex, const QString &vFileName, quint8 vPercent);
     /*!
Index: sources/device/DeviceController.cpp
===================================================================
diff -u -r7c86f3854db9ad02d95681203198d75a0d65c9fa -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/device/DeviceController.cpp	(.../DeviceController.cpp)	(revision 7c86f3854db9ad02d95681203198d75a0d65c9fa)
+++ sources/device/DeviceController.cpp	(.../DeviceController.cpp)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -657,3 +657,4 @@
 {
     emit didWatchFileChange(vFile);
 }
+
Index: sources/gui/GuiController.cpp
===================================================================
diff -u -raf8d98b36b427e2b5f4d6659fcf3b58ee79eab6a -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/gui/GuiController.cpp	(.../GuiController.cpp)	(revision af8d98b36b427e2b5f4d6659fcf3b58ee79eab6a)
+++ sources/gui/GuiController.cpp	(.../GuiController.cpp)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -90,6 +90,8 @@
             this                   ,   SLOT( onSDCardSpaceChange(bool, qint64, qint64, quint8)));
     connect(&_ApplicationController, SIGNAL(didSDCardSpaceTooLow(quint8)),
             this                   ,   SLOT( onSDCardSpaceTooLow(quint8)));
+    connect(&_ApplicationController, SIGNAL(didIOFailedLogs()),
+            this                   ,   SLOT(onIOFailedSD ()));
 
     // Export
     connect(&_ApplicationController, SIGNAL(didExport()),
@@ -290,7 +292,7 @@
     //DEBUG:0: qDebug() << " ***** GuiController " << Storage::SDCard_Base_Path_Name << vIsReady << vIsReadOnly << gDisableSDCFailLogStop;
 
     //TODO : May probably need to send the following alarm in case the SD-Card fails after successful post and stop logging as well.
-    //         emit didActionTransmit(GuiActionType::ID_AlarmTriggered, {GuiAlarmID::ALARM_ID_UI_POST_FAILURE_SDCARD ,0,0,0,0,0,0,0});
+//             emit didActionTransmit(GuiActionType::ID_AlarmTriggered, {GuiAlarmID::ALARM_ID_UI_POST_FAILURE_SDCARD ,0,0,0,0,0,0,0});
 
     emit didSDCardStateChange(vIsReady, vIsReadOnly);
 }
@@ -371,3 +373,14 @@
     AlarmStatusData data = AlarmGenerator::ALARM_ID_HD_COMM_TIMEOUT();
     emit didActionReceive(data);
 }
+
+/*!
+ * \brief   GuiController::onIOFailed
+ * \details This slot is when an SD I/O failure is indicated
+ * \param   vFile - the file name.
+ */
+void GuiController::onIOFailedSD()
+{
+    qDebug()<<Q_FUNC_INFO;
+    emit didActionTransmit(GuiActionType::ID_AlarmTriggered, {Gui::GuiAlarmID::ALARM_ID_HD_UI_POST_FAILURE_SDCARD,0,0,0,0,0,0,0});
+}
Index: sources/gui/GuiController.h
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/gui/GuiController.h	(.../GuiController.h)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/gui/GuiController.h	(.../GuiController.h)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -90,6 +90,8 @@
     void  onExportStat    (quint32 vIndex, const QString &vFileName, quint8 vPercent);
     void  onFailedTransmit(Sequence seq);
 
+    void onIOFailedSD();
+
 signals:
     void didActionReceive (GuiActionType vAction, const QVariantList &vData); // UI <= HD/DG
     void didActionTransmit(GuiActionType vAction, const QVariantList &vData); // UI => HD/DG
Index: sources/storage/Logger.cpp
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/storage/Logger.cpp	(.../Logger.cpp)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/storage/Logger.cpp	(.../Logger.cpp)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -321,8 +321,10 @@
     if (logPathName.isEmpty())
         logPathName = _logPathNames[eLogDebug];
     _logFileName = logPathName + fileName;
-    FileHandler::write(_logFileName, mContent + "\r\n", true);
 
+    bool isWritten = FileHandler::write(_logFileName, mContent + "\r\n", true);
+    if(!isWritten) emit didLogIOFailed();
+
     // console out the log if enabled.
     if (_enableConsoleOut) {
         qDebug().noquote() << mContent;
@@ -436,6 +438,12 @@
     // disabled coco begin validated: This needs user interaction to export to USB device
     // has been tested manually
     LOG_DEBUG(QString("Export %1 ended: %2").arg(_logNames[_exportLogsType]).arg(_exportLogsWatcher.result()));
+
+    qDebug()<< "_exportLogsWatcher.result()" << _exportLogsWatcher.result();
+    if(!_exportLogsWatcher.result()){
+        emit didLogIOFailed();
+        return;
+    }
     emit didExportLogs();
 }
 // disabled coco end
Index: sources/storage/Logger.h
===================================================================
diff -u -raf8d98b36b427e2b5f4d6659fcf3b58ee79eab6a -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/storage/Logger.h	(.../Logger.h)	(revision af8d98b36b427e2b5f4d6659fcf3b58ee79eab6a)
+++ sources/storage/Logger.h	(.../Logger.h)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -150,6 +150,7 @@
 
 signals:
     void didLogPathSet(Logger::LogType vLogType, const QString &vLogPath);
+    void didLogIOFailed();
 
 public slots:
     bool init();