diff --git a/bsp_q7s/core/CoreController.cpp b/bsp_q7s/core/CoreController.cpp
index 253efd91..6c2f042b 100644
--- a/bsp_q7s/core/CoreController.cpp
+++ b/bsp_q7s/core/CoreController.cpp
@@ -1,4 +1,5 @@
 #include "CoreController.h"
+#include "../memory/SdCardManager.h"
 
 CoreController::CoreController(object_id_t objectId):
         ExtendedControllerBase(objectId, objects::NO_OBJECT, 5) {
@@ -20,6 +21,23 @@ LocalPoolDataSetBase* CoreController::getDataSetHandle(sid_t sid) {
     return nullptr;
 }
 
+ReturnValue_t CoreController::initialize() {
+    // Find a way to store this non-volatile outside of SD cards (ProASIC?)
+    sd::SdCard preferredSdCard = sd::SdCard::SLOT_0;
+    // Creator or update status file
+    ReturnValue_t result = SdCardManager::instance()->updateSdCardStateFile();
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        sif::warning << "CoreController::initialize: Updating SD card state file failed"
+                << std::endl;
+    }
+    result = SdCardManager::instance()->switchOnSdCard(preferredSdCard);
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        sif::warning << "CoreController::initialize: Turning SD card on failed"
+                << std::endl;
+    }
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
 ReturnValue_t CoreController::checkModeCommand(Mode_t mode, Submode_t submode,
         uint32_t *msToReachTheMode) {
     return HasReturnvaluesIF::RETURN_OK;
diff --git a/bsp_q7s/core/CoreController.h b/bsp_q7s/core/CoreController.h
index bc8a1581..674ed073 100644
--- a/bsp_q7s/core/CoreController.h
+++ b/bsp_q7s/core/CoreController.h
@@ -7,6 +7,8 @@ class CoreController: public ExtendedControllerBase {
 public:
     CoreController(object_id_t objectId);
 
+    ReturnValue_t initialize() override;
+
     ReturnValue_t handleCommandMessage(CommandMessage *message) override;
     void performControlOperation() override;
 private:
diff --git a/bsp_q7s/memory/SdCardManager.cpp b/bsp_q7s/memory/SdCardManager.cpp
index 1458ef1f..1341c132 100644
--- a/bsp_q7s/memory/SdCardManager.cpp
+++ b/bsp_q7s/memory/SdCardManager.cpp
@@ -25,17 +25,28 @@ SdCardManager* SdCardManager::instance() {
 }
 
 ReturnValue_t SdCardManager::switchOnSdCard(sd::SdCard sdCard) {
-//    if(sdCardActive(sdCard)) {
-//        return ALREADY_ON;
-//    }
+    std::pair<bool, bool> active;
+    ReturnValue_t result = sdCardActive(active);
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        return result;
+    }
+    if((sdCard == sd::SdCard::SLOT_0 and active.first) or
+            (sdCard == sd::SdCard::SLOT_1 and active.second)) {
+        return ALREADY_ON;
+    }
     return setSdCardState(sdCard, true);
-
 }
 
 ReturnValue_t SdCardManager::switchOffSdCard(sd::SdCard sdCard) {
-//    if(not sdCardActive(sdCard)) {
-//        return ALREADY_OFF;
-//    }
+    std::pair<bool, bool> active;
+    ReturnValue_t result = sdCardActive(active);
+    if(result != HasReturnvaluesIF::RETURN_OK) {
+        return result;
+    }
+    if((sdCard == sd::SdCard::SLOT_0 and not active.first) or
+            (sdCard == sd::SdCard::SLOT_1 and not active.second)) {
+        return ALREADY_OFF;
+    }
     return setSdCardState(sdCard, false);
 }
 
@@ -62,7 +73,7 @@ ReturnValue_t SdCardManager::setSdCardState(sd::SdCard sdCard, bool on) {
     }
     sif::warning << "SdCardManager::setSdCardState: system call failed with code " <<
             result << std::endl;
-    return HasReturnvaluesIF::RETURN_FAILED;
+    return SYSTEM_CALL_ERROR;
 }
 
 ReturnValue_t SdCardManager::sdCardActive(std::pair<bool, bool>& active) {
@@ -78,7 +89,6 @@ ReturnValue_t SdCardManager::sdCardActive(std::pair<bool, bool>& active) {
     }
     string line;
     uint8_t idx = 0;
-    ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
     bool on = false;
 
     while (std::getline(sdStatus, line)) {
diff --git a/bsp_q7s/memory/SdCardManager.h b/bsp_q7s/memory/SdCardManager.h
index 98ecff24..0c9c664d 100644
--- a/bsp_q7s/memory/SdCardManager.h
+++ b/bsp_q7s/memory/SdCardManager.h
@@ -42,8 +42,20 @@ public:
 
     sd::SdCard getPreferredSdCard() const;
 
+    /**
+     * Switch on the specified SD card
+     * @param sdCard
+     * @return - RETURN_OK on success, ALREADY_ON if it is already on,
+     *           SYSTEM_CALL_ERROR on system error
+     */
     ReturnValue_t switchOnSdCard(sd::SdCard sdCard);
 
+    /**
+     * Switch off the specified SD card
+     * @param sdCard
+     * @return - RETURN_OK on success, ALREADY_ON if it is already on,
+     *           SYSTEM_CALL_ERROR on system error
+     */
     ReturnValue_t switchOffSdCard(sd::SdCard sdCard);
 
     /**