diff --git a/make/mcu/STM32F4.mk b/make/mcu/STM32F4.mk
index 6a756f7de9..234d58bd85 100644
--- a/make/mcu/STM32F4.mk
+++ b/make/mcu/STM32F4.mk
@@ -208,6 +208,7 @@ VCP_SRC = \
 endif
 
 MSC_SRC = \
+            drivers/usb_msc_common.c \
             drivers/usb_msc_f4xx.c \
             msc/usbd_msc_desc.c \
             msc/usbd_storage.c
diff --git a/make/mcu/STM32F7.mk b/make/mcu/STM32F7.mk
index ba62d7aadd..5c232f84c2 100644
--- a/make/mcu/STM32F7.mk
+++ b/make/mcu/STM32F7.mk
@@ -192,6 +192,7 @@ MCU_EXCLUDES = \
             drivers/timer.c
 
 MSC_SRC = \
+            drivers/usb_msc_common.c \
             drivers/usb_msc_f7xx.c \
             msc/usbd_storage.c
 
diff --git a/make/mcu/STM32H7.mk b/make/mcu/STM32H7.mk
index 971b673fbc..e8be80be4b 100644
--- a/make/mcu/STM32H7.mk
+++ b/make/mcu/STM32H7.mk
@@ -256,6 +256,7 @@ MCU_EXCLUDES = \
             drivers/timer.c
 
 #MSC_SRC = \
+#            drivers/usb_msc_common.c \
 #            drivers/usb_msc_h7xx.c \
 #            msc/usbd_storage.c
 
diff --git a/src/main/drivers/usb_msc.h b/src/main/drivers/usb_msc.h
index 72ef175307..4b5303dc20 100644
--- a/src/main/drivers/usb_msc.h
+++ b/src/main/drivers/usb_msc.h
@@ -31,3 +31,5 @@ bool mscCheckButton(void);
 void mscWaitForButton(void);
 void systemResetToMsc(int timezoneOffsetMinutes);
 void systemResetFromMsc(void);
+void mscSetActive(void);
+void mscActivityLed(void);
diff --git a/src/main/drivers/usb_msc_common.c b/src/main/drivers/usb_msc_common.c
new file mode 100644
index 0000000000..ada2bdfb66
--- /dev/null
+++ b/src/main/drivers/usb_msc_common.c
@@ -0,0 +1,148 @@
+/*
+ * This file is part of Cleanflight and Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software under the terms of the
+ * GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Author: Chris Hockuba (https://github.com/conkerkh)
+ *
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "platform.h"
+
+#if defined(USE_USB_MSC)
+
+#include "build/build_config.h"
+
+#include "common/utils.h"
+
+#include "drivers/io.h"
+#include "drivers/light_led.h"
+#include "drivers/nvic.h"
+#include "drivers/persistent.h"
+#include "drivers/system.h"
+#include "drivers/time.h"
+#include "drivers/usb_msc.h"
+
+#include "msc/usbd_storage.h"
+
+#include "pg/usb.h"
+
+#define DEBOUNCE_TIME_MS 20
+#define ACTIVITY_LED_PERIOD_MS 50
+
+static IO_t mscButton;
+static timeMs_t lastActiveTimeMs = 0;
+
+void mscInit(void)
+{
+    if (usbDevConfig()->mscButtonPin) {
+        mscButton = IOGetByTag(usbDevConfig()->mscButtonPin);
+        IOInit(mscButton, OWNER_USB_MSC_PIN, 0);
+        if (usbDevConfig()->mscButtonUsePullup) {
+            IOConfigGPIO(mscButton, IOCFG_IPU);
+        } else {
+            IOConfigGPIO(mscButton, IOCFG_IPD);
+        }
+    }
+}
+
+bool mscCheckBoot(void)
+{
+    const uint32_t bootModeRequest = persistentObjectRead(PERSISTENT_OBJECT_RESET_REASON);
+    return bootModeRequest == RESET_MSC_REQUEST;
+    // Note that we can't clear the persisent object after checking here. This is because
+    // this function is called multiple times during initialization. So we clear on a reset
+    // out of MSC mode.
+}
+
+void mscSetActive(void)
+{
+    lastActiveTimeMs = millis();
+}
+
+void mscActivityLed(void)
+{
+    static timeMs_t nextToggleMs = 0;
+    const timeMs_t nowMs = millis();
+
+    if (nowMs - lastActiveTimeMs > ACTIVITY_LED_PERIOD_MS) {
+        LED0_OFF;
+        nextToggleMs = 0;
+    } else if (nowMs > nextToggleMs) {
+        LED0_TOGGLE;
+        nextToggleMs = nowMs + ACTIVITY_LED_PERIOD_MS;
+    }
+}
+
+bool mscCheckButton(void)
+{
+    bool result = false;
+    if (mscButton) {
+        uint8_t state = IORead(mscButton);
+        if (usbDevConfig()->mscButtonUsePullup) {
+            result = state == 0;
+        } else {
+            result = state == 1;
+        }
+    }
+
+    return result;
+}
+
+void mscWaitForButton(void)
+{
+    // In order to exit MSC mode simply disconnect the board, or push the button again.
+    while (mscCheckButton());
+    delay(DEBOUNCE_TIME_MS);
+    while (true) {
+        asm("NOP");
+        if (mscCheckButton()) {
+            systemResetFromMsc();
+        }
+        mscActivityLed();
+    }
+}
+
+void systemResetToMsc(int timezoneOffsetMinutes)
+{
+    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_MSC_REQUEST);
+
+    __disable_irq();
+
+    // Persist the RTC across the reboot to use as the file timestamp
+#ifdef USE_PERSISTENT_MSC_RTC
+    rtcPersistWrite(timezoneOffsetMinutes);
+#else
+    UNUSED(timezoneOffsetMinutes);
+#endif
+    NVIC_SystemReset();
+}
+
+void systemResetFromMsc(void)
+{
+    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_NONE);
+    __disable_irq();
+    NVIC_SystemReset();
+}
+
+#endif
diff --git a/src/main/drivers/usb_msc_f4xx.c b/src/main/drivers/usb_msc_f4xx.c
index b7608b87a9..66b0fcf43d 100644
--- a/src/main/drivers/usb_msc_f4xx.c
+++ b/src/main/drivers/usb_msc_f4xx.c
@@ -38,15 +38,13 @@
 #include "blackbox/blackbox.h"
 
 #include "drivers/io.h"
-#include "drivers/light_led.h"
 #include "drivers/nvic.h"
-#include "drivers/persistent.h"
 #include "drivers/sdmmc_sdio.h"
 #include "drivers/system.h"
 #include "drivers/time.h"
 #include "drivers/usb_msc.h"
 
-#include "drivers/accgyro/accgyro_mpu.h"
+#include "msc/usbd_storage.h"
 
 #include "pg/sdcard.h"
 #include "pg/usb.h"
@@ -55,25 +53,6 @@
 #include "usbd_cdc_vcp.h"
 #include "usb_io.h"
 
-#include "msc/usbd_storage.h"
-
-#define DEBOUNCE_TIME_MS 20
-
-static IO_t mscButton;
-
-void mscInit(void)
-{
-    if (usbDevConfig()->mscButtonPin) {
-        mscButton = IOGetByTag(usbDevConfig()->mscButtonPin);
-        IOInit(mscButton, OWNER_USB_MSC_PIN, 0);
-        if (usbDevConfig()->mscButtonUsePullup) {
-            IOConfigGPIO(mscButton, IOCFG_IPU);
-        } else {
-            IOConfigGPIO(mscButton, IOCFG_IPD);
-        }
-    }
-}
-
 uint8_t mscStart(void)
 {
     //Start USB
@@ -121,63 +100,4 @@ uint8_t mscStart(void)
     return 0;
 }
 
-bool mscCheckBoot(void)
-{
-    const uint32_t bootModeRequest = persistentObjectRead(PERSISTENT_OBJECT_RESET_REASON);
-    return bootModeRequest == RESET_MSC_REQUEST;
-    // Note that we can't clear the persisent object after checking here. This is because
-    // this function is called multiple times during initialization. So we clear on a reset
-    // out of MSC mode.
-}
-
-bool mscCheckButton(void)
-{
-    bool result = false;
-    if (mscButton) {
-        uint8_t state = IORead(mscButton);
-        if (usbDevConfig()->mscButtonUsePullup) {
-            result = state == 0;
-        } else {
-            result = state == 1;
-        }
-    }
-
-    return result;
-}
-
-void mscWaitForButton(void)
-{
-    // In order to exit MSC mode simply disconnect the board, or push the button again.
-    while (mscCheckButton());
-    delay(DEBOUNCE_TIME_MS);
-    while (true) {
-        asm("NOP");
-        if (mscCheckButton()) {
-            systemResetFromMsc();
-        }
-    }
-}
-
-void systemResetToMsc(int timezoneOffsetMinutes)
-{
-    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_MSC_REQUEST);
-
-    __disable_irq();
-
-    // Persist the RTC across the reboot to use as the file timestamp
-#ifdef USE_PERSISTENT_MSC_RTC
-    rtcPersistWrite(timezoneOffsetMinutes);
-#else
-    UNUSED(timezoneOffsetMinutes);
-#endif
-    NVIC_SystemReset();
-}
-
-void systemResetFromMsc(void)
-{
-    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_NONE);
-    __disable_irq();
-    NVIC_SystemReset();
-}
-
 #endif
diff --git a/src/main/drivers/usb_msc_f7xx.c b/src/main/drivers/usb_msc_f7xx.c
index d6b4c1887e..9fbf62c8ee 100644
--- a/src/main/drivers/usb_msc_f7xx.c
+++ b/src/main/drivers/usb_msc_f7xx.c
@@ -37,40 +37,21 @@
 
 #include "blackbox/blackbox.h"
 #include "drivers/io.h"
-#include "drivers/light_led.h"
 #include "drivers/nvic.h"
-#include "drivers/persistent.h"
 #include "drivers/serial_usb_vcp.h"
 #include "drivers/system.h"
 #include "drivers/time.h"
 #include "drivers/usb_msc.h"
 
-#include "drivers/accgyro/accgyro_mpu.h"
+#include "msc/usbd_storage.h"
 
 #include "pg/sdcard.h"
 #include "pg/usb.h"
 
 #include "vcp_hal/usbd_cdc_interface.h"
+
 #include "usb_io.h"
 #include "usbd_msc.h"
-#include "msc/usbd_storage.h"
-
-#define DEBOUNCE_TIME_MS 20
-
-static IO_t mscButton;
-
-void mscInit(void)
-{
-    if (usbDevConfig()->mscButtonPin) {
-        mscButton = IOGetByTag(usbDevConfig()->mscButtonPin);
-        IOInit(mscButton, OWNER_USB_MSC_PIN, 0);
-        if (usbDevConfig()->mscButtonUsePullup) {
-            IOConfigGPIO(mscButton, IOCFG_IPU);
-        } else {
-            IOConfigGPIO(mscButton, IOCFG_IPD);
-        }
-    }
-}
 
 uint8_t mscStart(void)
 {
@@ -126,63 +107,4 @@ uint8_t mscStart(void)
     return 0;
 }
 
-bool mscCheckBoot(void)
-{
-    const uint32_t bootModeRequest = persistentObjectRead(PERSISTENT_OBJECT_RESET_REASON);
-    return bootModeRequest == RESET_MSC_REQUEST;
-    // Note that we can't clear the persisent object after checking here. This is because
-    // this function is called multiple times during initialization. So we clear on a reset
-    // out of MSC mode.
-}
-
-bool mscCheckButton(void)
-{
-    bool result = false;
-    if (mscButton) {
-        uint8_t state = IORead(mscButton);
-        if (usbDevConfig()->mscButtonUsePullup) {
-            result = state == 0;
-        } else {
-            result = state == 1;
-        }
-    }
-
-    return result;
-}
-
-void mscWaitForButton(void)
-{
-    // In order to exit MSC mode simply disconnect the board, or push the button again.
-    while (mscCheckButton());
-    delay(DEBOUNCE_TIME_MS);
-    while (true) {
-        asm("NOP");
-        if (mscCheckButton()) {
-            systemResetFromMsc();
-        }
-    }
-}
-
-void systemResetToMsc(int timezoneOffsetMinutes)
-{
-    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_MSC_REQUEST);
-
-    __disable_irq();
-
-    // Persist the RTC across the reboot to use as the file timestamp
-#ifdef USE_PERSISTENT_MSC_RTC
-    rtcPersistWrite(timezoneOffsetMinutes);
-#else
-    UNUSED(timezoneOffsetMinutes);
-#endif
-    NVIC_SystemReset();
-}
-
-void systemResetFromMsc(void)
-{
-    persistentObjectWrite(PERSISTENT_OBJECT_RESET_REASON, RESET_NONE);
-    __disable_irq();
-    NVIC_SystemReset();
-}
-
 #endif
diff --git a/src/main/fc/init.c b/src/main/fc/init.c
index 5ff9b09f7f..350358e805 100644
--- a/src/main/fc/init.c
+++ b/src/main/fc/init.c
@@ -614,7 +614,7 @@ void init(void)
     if (mscCheckBoot() || mscCheckButton()) {
         ledInit(statusLedConfig());
 
-#if defined(USE_FLASHFS) && defined(USE_FLASH_CHIP)
+#if defined(USE_FLASHFS)
         // If the blackbox device is onboard flash, then initialize and scan
         // it to identify the log files *before* starting the USB device to
         // prevent timeouts of the mass storage device.
diff --git a/src/main/msc/emfat_file.c b/src/main/msc/emfat_file.c
index 242fdf44b5..19fdf77d1c 100644
--- a/src/main/msc/emfat_file.c
+++ b/src/main/msc/emfat_file.c
@@ -34,6 +34,7 @@
 #include "drivers/flash.h"
 #include "drivers/light_led.h"
 #include "drivers/time.h"
+#include "drivers/usb_msc.h"
 
 #include "io/flashfs.h"
 
@@ -278,7 +279,6 @@ static const emfat_entry_t entriesPredefined[] =
 #define EMFAT_MAX_ENTRY (PREDEFINED_ENTRY_COUNT + EMFAT_MAX_LOG_ENTRY + APPENDED_ENTRY_COUNT)
 
 static emfat_entry_t entries[EMFAT_MAX_ENTRY];
-static char logNames[EMFAT_MAX_LOG_ENTRY][8+1+3];
 
 emfat_t emfat;
 static uint32_t cmaTime = CMA_TIME;
@@ -292,8 +292,11 @@ static void emfat_set_entry_cma(emfat_entry_t *entry)
     entry->cma_time[2] = cmaTime;
 }
 
+#ifdef USE_FLASHFS
 static void emfat_add_log(emfat_entry_t *entry, int number, uint32_t offset, uint32_t size)
 {
+    static char logNames[EMFAT_MAX_LOG_ENTRY][8+1+3];
+
     tfp_sprintf(logNames[number], FC_FIRMWARE_IDENTIFIER "_%03d.BBL", number + 1);
     entry->name = logNames[number];
     entry->level = 1;
@@ -306,16 +309,6 @@ static void emfat_add_log(emfat_entry_t *entry, int number, uint32_t offset, uin
     entry->cma_time[2] = entry->cma_time[0];
 }
 
-static void blinkStatusLed(void)
-{
-    static timeMs_t nextToggleMs = 0;
-    const timeMs_t nowMs = millis();
-    if (nowMs > nextToggleMs) {
-        LED0_TOGGLE;
-        nextToggleMs = nowMs + 50; // toggle the status LED every 50ms
-    }
-}
-
 static int emfat_find_log(emfat_entry_t *entry, int maxCount, int flashfsUsedSpace)
 {
     int lastOffset = 0;
@@ -333,7 +326,9 @@ static int emfat_find_log(emfat_entry_t *entry, int maxCount, int flashfsUsedSpa
 
     for ( ; currOffset < flashfsUsedSpace ; currOffset += 2048) { // XXX 2048 = FREE_BLOCK_SIZE in io/flashfs.c
 
-        blinkStatusLed();
+        mscSetActive();
+        mscActivityLed();
+
         flashfsReadAbs(currOffset, buffer, HDR_BUF_SIZE);
 
         if (strncmp((char *)buffer, logHeader, lenLogHeader)) {
@@ -413,9 +408,12 @@ static int emfat_find_log(emfat_entry_t *entry, int maxCount, int flashfsUsedSpa
 
     return logCount;
 }
+#endif  // USE_FLASHFS
 
 void emfat_init_files(void)
 {
+    int flashfsUsedSpace = 0;
+    int entryIndex = PREDEFINED_ENTRY_COUNT;
     emfat_entry_t *entry;
     memset(entries, 0, sizeof(entries));
 
@@ -427,22 +425,24 @@ void emfat_init_files(void)
     }
 #endif
 
-    flashInit(flashConfig());
-    flashfsInit();
-    LED0_OFF;
-
-    const int flashfsUsedSpace = flashfsIdentifyStartOfFreeSpace();
-
+    // create the predefined entries
     for (size_t i = 0 ; i < PREDEFINED_ENTRY_COUNT ; i++) {
         entries[i] = entriesPredefined[i];
         // These entries have timestamps corresponding to when the filesystem is mounted
         emfat_set_entry_cma(&entries[i]);
     }
 
+#ifdef USE_FLASHFS
+    flashInit(flashConfig());
+    flashfsInit();
+    LED0_OFF;
+
+    flashfsUsedSpace = flashfsIdentifyStartOfFreeSpace();
+
     // Detect and create entries for each individual log
     const int logCount = emfat_find_log(&entries[PREDEFINED_ENTRY_COUNT], EMFAT_MAX_LOG_ENTRY, flashfsUsedSpace);
 
-    int entryIndex = PREDEFINED_ENTRY_COUNT + logCount;
+    entryIndex += logCount;
 
     if (logCount > 0) {
         // Create the all logs entry that represents all used flash space to
@@ -455,6 +455,7 @@ void emfat_init_files(void)
         emfat_set_entry_cma(entry);
         ++entryIndex;
     }
+#endif // USE_FLASHFS
 
     // Padding file to fill out the filesystem size to FILESYSTEM_SIZE_MB
     if (flashfsUsedSpace * 2 < FILESYSTEM_SIZE_MB * 1024 * 1024) {
diff --git a/src/main/msc/usbd_storage_emfat.c b/src/main/msc/usbd_storage_emfat.c
index 66656c0f17..40d94fa064 100644
--- a/src/main/msc/usbd_storage_emfat.c
+++ b/src/main/msc/usbd_storage_emfat.c
@@ -33,6 +33,7 @@
 #include "common/utils.h"
 
 #include "drivers/light_led.h"
+#include "drivers/usb_msc.h"
 
 #include "msc/usbd_storage.h"
 #include "msc/usbd_storage_emfat.h"
@@ -95,9 +96,8 @@ static int8_t STORAGE_Read(
     uint16_t blk_len)   // nmber of blocks to be read
 {
     UNUSED(lun);
-    LED0_ON;
+    mscSetActive();
     emfat_read(&emfat, buf, blk_addr, blk_len);
-    LED0_OFF;
     return 0;
 }
 
diff --git a/src/main/msc/usbd_storage_sd_spi.c b/src/main/msc/usbd_storage_sd_spi.c
index c514edfe8b..4addcb5819 100644
--- a/src/main/msc/usbd_storage_sd_spi.c
+++ b/src/main/msc/usbd_storage_sd_spi.c
@@ -35,10 +35,11 @@
 
 #include "usbd_storage.h"
 
-#include "drivers/sdcard.h"
-#include "drivers/light_led.h"
-#include "drivers/io.h"
 #include "drivers/bus_spi.h"
+#include "drivers/io.h"
+#include "drivers/light_led.h"
+#include "drivers/sdcard.h"
+#include "drivers/usb_msc.h"
 
 #include "pg/sdcard.h"
 #include "pg/bus_spi.h"
@@ -148,7 +149,7 @@ static int8_t STORAGE_Init (uint8_t lun)
 	LED0_OFF;
 	sdcard_init(sdcardConfig());
 	while (sdcard_poll() == 0);
-	LED0_ON;
+    mscSetActive();
 	return 0;
 }
 
@@ -214,12 +215,11 @@ static int8_t STORAGE_Read (uint8_t lun,
                  uint16_t blk_len)
 {
 	UNUSED(lun);
-	LED1_ON;
 	for (int i = 0; i < blk_len; i++) {
 	    while (sdcard_readBlock(blk_addr + i, buf + (512 * i), NULL, NULL) == 0);
 		while (sdcard_poll() == 0);
 	}
-	LED1_OFF;
+    mscSetActive();
 	return 0;
 }
 /*******************************************************************************
@@ -235,14 +235,13 @@ static int8_t STORAGE_Write (uint8_t lun,
                   uint16_t blk_len)
 {
 	UNUSED(lun);
-	LED1_ON;
 	for (int i = 0; i < blk_len; i++) {
 		while (sdcard_writeBlock(blk_addr + i, buf + (i * 512), NULL, NULL) != SDCARD_OPERATION_IN_PROGRESS) {
 			sdcard_poll();
 		}
 		while (sdcard_poll() == 0);
 	}
-	LED1_OFF;
+    mscSetActive();
 	return 0;
 }
 /*******************************************************************************
diff --git a/src/main/msc/usbd_storage_sdio.c b/src/main/msc/usbd_storage_sdio.c
index 9cd26642ec..53c1487a21 100644
--- a/src/main/msc/usbd_storage_sdio.c
+++ b/src/main/msc/usbd_storage_sdio.c
@@ -35,12 +35,14 @@
 #ifdef USE_SDCARD
 
 #include "common/utils.h"
+
 #include "drivers/dma.h"
 #include "drivers/dma_reqmap.h"
-#include "drivers/sdmmc_sdio.h"
-#include "drivers/light_led.h"
 #include "drivers/io.h"
+#include "drivers/light_led.h"
 #include "drivers/sdcard.h"
+#include "drivers/sdmmc_sdio.h"
+#include "drivers/usb_msc.h"
 
 #include "pg/pg.h"
 #include "pg/sdcard.h"
@@ -103,47 +105,47 @@ static int8_t STORAGE_GetMaxLun (void);
 static uint8_t  STORAGE_Inquirydata[] = {//36
 
   /* LUN 0 */
-  0x00,
-  0x80,
-  0x02,
-  0x02,
+    0x00,
+    0x80,
+    0x02,
+    0x02,
 #ifdef USE_HAL_DRIVER
-  (STANDARD_INQUIRY_DATA_LEN - 5),
+    (STANDARD_INQUIRY_DATA_LEN - 5),
 #else
-  (USBD_STD_INQUIRY_LENGTH - 5),
+    (USBD_STD_INQUIRY_LENGTH - 5),
 #endif
-  0x00,
-  0x00,
-  0x00,
-  'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
-  'P', 'r', 'o', 'd', 'u', 't', ' ', ' ', /* Product      : 16 Bytes */
-  ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
-  '0', '.', '0' ,'1',                     /* Version      : 4 Bytes */
+    0x00,
+    0x00,
+    0x00,
+    'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
+    'P', 'r', 'o', 'd', 'u', 't', ' ', ' ', /* Product      : 16 Bytes */
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+    '0', '.', '0' ,'1',                     /* Version      : 4 Bytes */
 };
 
 #ifdef USE_HAL_DRIVER
 USBD_StorageTypeDef USBD_MSC_MICRO_SDIO_fops =
 {
-  STORAGE_Init,
-  STORAGE_GetCapacity,
-  STORAGE_IsReady,
-  STORAGE_IsWriteProtected,
-  STORAGE_Read,
-  STORAGE_Write,
-  STORAGE_GetMaxLun,
-  (int8_t*)STORAGE_Inquirydata,
+    STORAGE_Init,
+    STORAGE_GetCapacity,
+    STORAGE_IsReady,
+    STORAGE_IsWriteProtected,
+    STORAGE_Read,
+    STORAGE_Write,
+    STORAGE_GetMaxLun,
+    (int8_t*)STORAGE_Inquirydata,
 };
 #else
 USBD_STORAGE_cb_TypeDef USBD_MSC_MICRO_SDIO_fops =
 {
-  STORAGE_Init,
-  STORAGE_GetCapacity,
-  STORAGE_IsReady,
-  STORAGE_IsWriteProtected,
-  STORAGE_Read,
-  STORAGE_Write,
-  STORAGE_GetMaxLun,
-  (int8_t*)STORAGE_Inquirydata,
+    STORAGE_Init,
+    STORAGE_GetCapacity,
+    STORAGE_IsReady,
+    STORAGE_IsWriteProtected,
+    STORAGE_Read,
+    STORAGE_Write,
+    STORAGE_GetMaxLun,
+    (int8_t*)STORAGE_Inquirydata,
 };
 #endif
 
@@ -156,24 +158,24 @@ USBD_STORAGE_cb_TypeDef USBD_MSC_MICRO_SDIO_fops =
 *******************************************************************************/
 static int8_t STORAGE_Init (uint8_t lun)
 {
-	//Initialize SD_DET
-	const IO_t sd_det = IOGetByTag(sdcardConfig()->cardDetectTag);
-	IOInit(sd_det, OWNER_SDCARD_DETECT, 0);
-	IOConfigGPIO(sd_det, IOCFG_IPU);
+    //Initialize SD_DET
+    const IO_t sd_det = IOGetByTag(sdcardConfig()->cardDetectTag);
+    IOInit(sd_det, OWNER_SDCARD_DETECT, 0);
+    IOConfigGPIO(sd_det, IOCFG_IPU);
 
-	UNUSED(lun);
-	LED0_OFF;
+    UNUSED(lun);
+    LED0_OFF;
 
 #ifdef USE_DMA_SPEC
         const dmaChannelSpec_t *dmaChannelSpec = dmaGetChannelSpecByPeripheral(DMA_PERIPH_SDIO, 0, sdioConfig()->dmaopt);
 
-	if (!dmaChannelSpec) {
-        	return 1;
-        }
+    if (!dmaChannelSpec) {
+        return 1;
+    }
 
-	SD_Initialize_LL((DMA_ARCH_TYPE *)dmaChannelSpec->ref);
+    SD_Initialize_LL((DMA_ARCH_TYPE *)dmaChannelSpec->ref);
 #else
-	SD_Initialize_LL(SDCARD_SDIO_DMA_OPT);
+    SD_Initialize_LL(SDCARD_SDIO_DMA_OPT);
 #endif
 
     if (!sdcard_isInserted()) {
@@ -183,9 +185,9 @@ static int8_t STORAGE_Init (uint8_t lun)
         return 1;
     }
 
-	LED0_ON;
+    mscSetActive();
 
-	return 0;
+    return 0;
 }
 
 /*******************************************************************************
@@ -201,15 +203,15 @@ static int8_t STORAGE_GetCapacity (uint8_t lun, uint32_t *block_num, uint16_t *b
 static int8_t STORAGE_GetCapacity (uint8_t lun, uint32_t *block_num, uint32_t *block_size)
 #endif
 {
-	UNUSED(lun);
-	if (!sdcard_isInserted()) {
-		return -1;
-	}
-	SD_GetCardInfo();
+    UNUSED(lun);
+    if (!sdcard_isInserted()) {
+        return -1;
+    }
+    SD_GetCardInfo();
 
-	*block_num = SD_CardInfo.CardCapacity;
-	*block_size = 512;
-	return (0);
+    *block_num = SD_CardInfo.CardCapacity;
+    *block_size = 512;
+    return (0);
 }
 
 /*******************************************************************************
@@ -221,12 +223,12 @@ static int8_t STORAGE_GetCapacity (uint8_t lun, uint32_t *block_num, uint32_t *b
 *******************************************************************************/
 static int8_t  STORAGE_IsReady (uint8_t lun)
 {
-	UNUSED(lun);
-	int8_t ret = -1;
-	if (SD_GetState() == true && sdcard_isInserted()) {
+    UNUSED(lun);
+    int8_t ret = -1;
+    if (SD_GetState() == true && sdcard_isInserted()) {
         ret = 0;
-	}
-	return ret;
+    }
+    return ret;
 }
 
 /*******************************************************************************
@@ -238,8 +240,8 @@ static int8_t  STORAGE_IsReady (uint8_t lun)
 *******************************************************************************/
 static int8_t  STORAGE_IsWriteProtected (uint8_t lun)
 {
-  UNUSED(lun);
-  return  0;
+    UNUSED(lun);
+    return  0;
 }
 
 /*******************************************************************************
@@ -254,20 +256,18 @@ static int8_t STORAGE_Read (uint8_t lun,
                  uint32_t blk_addr,
                  uint16_t blk_len)
 {
-	UNUSED(lun);
-	if (!sdcard_isInserted()) {
-		return -1;
-	}
-	LED1_ON;
-	//buf should be 32bit aligned, but usually is so we don't do byte alignment
-	if (SD_ReadBlocks_DMA(blk_addr, (uint32_t*) buf, 512, blk_len) == 0) {
-		while (SD_CheckRead());
-		while(SD_GetState() == false);
-		LED1_OFF;
-		return 0;
-	}
-	LED1_OFF;
-	return -1;
+    UNUSED(lun);
+    if (!sdcard_isInserted()) {
+        return -1;
+    }
+    //buf should be 32bit aligned, but usually is so we don't do byte alignment
+    if (SD_ReadBlocks_DMA(blk_addr, (uint32_t*) buf, 512, blk_len) == 0) {
+        while (SD_CheckRead());
+        while(SD_GetState() == false);
+        mscSetActive();
+        return 0;
+    }
+    return -1;
 }
 /*******************************************************************************
 * Function Name  : Write_Memory
@@ -281,20 +281,18 @@ static int8_t STORAGE_Write (uint8_t lun,
                   uint32_t blk_addr,
                   uint16_t blk_len)
 {
-	UNUSED(lun);
-	if (!sdcard_isInserted()) {
-		return -1;
-	}
-	LED1_ON;
-	//buf should be 32bit aligned, but usually is so we don't do byte alignment
-	if (SD_WriteBlocks_DMA(blk_addr, (uint32_t*) buf, 512, blk_len) == 0) {
-		while (SD_CheckWrite());
-		while(SD_GetState() == false);
-		LED1_OFF;
-		return 0;
-	}
-	LED1_OFF;
-	return -1;
+    UNUSED(lun);
+    if (!sdcard_isInserted()) {
+        return -1;
+    }
+    //buf should be 32bit aligned, but usually is so we don't do byte alignment
+    if (SD_WriteBlocks_DMA(blk_addr, (uint32_t*) buf, 512, blk_len) == 0) {
+        while (SD_CheckWrite());
+        while(SD_GetState() == false);
+        mscSetActive();
+        return 0;
+    }
+    return -1;
 }
 /*******************************************************************************
 * Function Name  : Write_Memory
@@ -305,7 +303,7 @@ static int8_t STORAGE_Write (uint8_t lun,
 *******************************************************************************/
 static int8_t STORAGE_GetMaxLun (void)
 {
-  return (STORAGE_LUN_NBR - 1);
+    return (STORAGE_LUN_NBR - 1);
 }
 
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/