diff --git a/esp3d/configuration.h b/esp3d/configuration.h
index 93bad7c9..bea25324 100644
--- a/esp3d/configuration.h
+++ b/esp3d/configuration.h
@@ -107,7 +107,7 @@
 //ESP_SD_NATIVE               1 //esp32 only for the momment
 //ESP_SDIO                    2 //esp32 only
 //ESP_SDFAT                   3 //Not available yet
-//#define SD_DEVICE    ESP_SDIO
+#define SD_DEVICE    ESP_SD_NATIVE
 
 //FILESYSTEM_TIMESTAMP_FEATURE: allow to get last write time from FILESYSTEM files
 //#define SD_TIMESTAMP_FEATURE
diff --git a/esp3d/src/include/pins.h b/esp3d/src/include/pins.h
index 45e41fa7..dfd789a3 100644
--- a/esp3d/src/include/pins.h
+++ b/esp3d/src/include/pins.h
@@ -166,10 +166,12 @@
 
 //Pins for the support of SD Card Reader
 //-1 means use default pins of your board defined core
-#define ESP_SD_CS_PIN           13 //-1
-#define ESP_SD_MISO_PIN         2  //-1
-#define ESP_SD_MOSI_PIN         15 //-1
-#define ESP_SD_SCK_PIN          14 //-1
+#define ESP_SD_CS_PIN           -1
+//These are hardcoded on ESP8266 to 12/13/14 
+//so modifications are ignored on ESP8266
+#define ESP_SD_MISO_PIN         -1
+#define ESP_SD_MOSI_PIN         -1
+#define ESP_SD_SCK_PIN          -1
 
 // For SDIO Connect the SD card to the following pins:
 //SD Card | ESP32
diff --git a/esp3d/src/modules/filesystem/esp_sd.cpp b/esp3d/src/modules/filesystem/esp_sd.cpp
index 50281169..52282a49 100644
--- a/esp3d/src/modules/filesystem/esp_sd.cpp
+++ b/esp3d/src/modules/filesystem/esp_sd.cpp
@@ -24,16 +24,22 @@
 #ifdef SD_TIMESTAMP_FEATURE
 #include <time.h>
 #endif //SD_TIMESTAMP_FEATURE
-#include <FS.h>
-
 
 #define ESP_MAX_SD_OPENHANDLE 4
+#if (SD_DEVICE == ESP_SD_NATIVE) && defined (ARDUINO_ARCH_ESP8266)
+#define FS_NO_GLOBALS
+#define NO_GLOBAL_SD
+#include "SdFat.h"
+sdfat::File tSDFile_handle[ESP_MAX_SD_OPENHANDLE];
+#else
+#include <FS.h>
 File tSDFile_handle[ESP_MAX_SD_OPENHANDLE];
+#endif
 
 bool ESP_SD::_started = false;
 uint8_t ESP_SD::_state = ESP_SDCARD_NOT_PRESENT;
 uint8_t ESP_SD::_spi_speed_divider = 1;
-
+bool ESP_SD::_sizechanged = true;
 uint8_t ESP_SD::setState(uint8_t flag)
 {
     _state =  flag;
diff --git a/esp3d/src/modules/filesystem/esp_sd.h b/esp3d/src/modules/filesystem/esp_sd.h
index d2448231..c23d9127 100644
--- a/esp3d/src/modules/filesystem/esp_sd.h
+++ b/esp3d/src/modules/filesystem/esp_sd.h
@@ -101,6 +101,7 @@ private:
     static bool _started;
     static uint8_t _state;
     static uint8_t _spi_speed_divider;
+    static bool _sizechanged;
 };
 
 
diff --git a/esp3d/src/modules/filesystem/sd/sd_native_esp32.cpp b/esp3d/src/modules/filesystem/sd/sd_native_esp32.cpp
index 40d9baca..7d13f9f0 100644
--- a/esp3d/src/modules/filesystem/sd/sd_native_esp32.cpp
+++ b/esp3d/src/modules/filesystem/sd/sd_native_esp32.cpp
@@ -26,6 +26,8 @@ sd_native_esp32.cpp - ESP3D sd support class
 #include "FS.h"
 #include "SD.h"
 
+//base frequency
+//or use (1000000 * ESP.getCpuFreqMHz()) TBC
 #define ESP_SPI_FREQ  4000000
 
 extern File tSDFile_handle[ESP_MAX_SD_OPENHANDLE];
diff --git a/esp3d/src/modules/filesystem/sd/sd_native_esp8266.cpp b/esp3d/src/modules/filesystem/sd/sd_native_esp8266.cpp
new file mode 100644
index 00000000..2dc26522
--- /dev/null
+++ b/esp3d/src/modules/filesystem/sd/sd_native_esp8266.cpp
@@ -0,0 +1,340 @@
+/*
+sd_native_esp8266.cpp - ESP3D sd support class
+
+  Copyright (c) 2014 Luc Lebosse. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+#include "../../../include/esp3d_config.h"
+#if defined (ARDUINO_ARCH_ESP8266) && defined(SD_DEVICE)
+#if (SD_DEVICE == ESP_SD_NATIVE)
+#define FS_NO_GLOBALS
+#include "../esp_sd.h"
+#include "../../../core/genLinkedList.h"
+#include "../../../core/settings_esp3d.h"
+#define NO_GLOBAL_SD
+#include "SdFat.h"
+extern sdfat::File tSDFile_handle[ESP_MAX_SD_OPENHANDLE];
+using namespace sdfat;
+
+
+SdFat SD;
+
+uint8_t ESP_SD::getState(bool refresh)
+{
+#if defined(ESP_SD_DETECT_PIN) && ESP_SD_DETECT_PIN != -1
+    //no need to go further if SD detect is not correct
+    if (!((digitalRead (ESP_SD_DETECT_PIN) == ESP_SD_DETECT_VALUE) ? true : false)) {
+        _state = ESP_SDCARD_NOT_PRESENT;
+        return _state;
+    }
+#endif  //ESP_SD_DETECT_PIN
+    //if busy doing something return state
+    if (!((_state == ESP_SDCARD_NOT_PRESENT) || _state == ESP_SDCARD_IDLE)) {
+        return _state;
+    }
+    if (!refresh) {
+        return _state;  //to avoid refresh=true + busy to reset SD and waste time
+    }
+//SD is idle or not detected, let see if still the case
+
+    _state = ESP_SDCARD_NOT_PRESENT;
+//using default value for speed ? should be parameter
+//refresh content if card was removed
+    if (SD.begin((ESP_SD_CS_PIN == -1)?SS:ESP_SD_CS_PIN, SD_SCK_HZ(F_CPU/_spi_speed_divider))) {
+        if (SD.card()->cardSize() > 0 ) {
+            _state = ESP_SDCARD_IDLE;
+        }
+    }
+    return _state;
+}
+
+bool ESP_SD::begin()
+{
+    _started = true;
+    _state = ESP_SDCARD_NOT_PRESENT;
+    _spi_speed_divider = Settings_ESP3D::read_byte(ESP_SD_SPEED_DIV);
+    //sanity check
+    if (_spi_speed_divider <= 0) {
+        _spi_speed_divider = 1;
+    }
+    if (getState(true) == ESP_SDCARD_IDLE){
+        freeBytes();
+    }
+    return _started;
+}
+
+void ESP_SD::end()
+{
+    _state = ESP_SDCARD_NOT_PRESENT;
+    _started = false;
+}
+
+uint64_t ESP_SD::totalBytes()
+{
+    uint64_t volTotal = SD.vol()->clusterCount();
+    uint8_t blocks = SD.vol()->blocksPerCluster();
+    return volTotal * blocks * 512;
+}
+
+uint64_t ESP_SD::usedBytes()
+{
+    return totalBytes() - freeBytes();
+}
+
+uint64_t ESP_SD::freeBytes()
+{
+    static uint64_t volFree;
+    if (_sizechanged){
+        volFree = SD.vol()->freeClusterCount();
+        _sizechanged = false;
+    }
+    uint8_t blocks = SD.vol()->blocksPerCluster();
+    return volFree * blocks * 512;
+};
+
+bool ESP_SD::format()
+{
+    //not available yet
+    return false;
+}
+
+ESP_SDFile ESP_SD::open(const char* path, uint8_t mode)
+{
+    //do some check
+    if(((strcmp(path,"/") == 0) && ((mode == ESP_SD_FILE_WRITE) || (mode == ESP_SD_FILE_APPEND))) || (strlen(path) == 0)) {
+        _sizechanged = true;
+        return ESP_SDFile();
+    }
+    // path must start by '/'
+    if (path[0] != '/') {
+        return ESP_SDFile();
+    }
+    if (mode != ESP_SD_FILE_READ) {
+        //check container exists
+        String p = path;
+        p.remove(p.lastIndexOf('/') +1);
+        if (!exists(p.c_str())) {
+            log_esp3d("Error opening: %s", path);
+            return ESP_SDFile();
+        }
+    }
+    sdfat::File tmp = SD.open(path, (mode == ESP_SD_FILE_READ)?FILE_READ:(mode == ESP_SD_FILE_WRITE)?FILE_WRITE:FILE_WRITE);
+    ESP_SDFile esptmp(&tmp, tmp.isDir(),(mode == ESP_SD_FILE_READ)?false:true, path);
+    return esptmp;
+}
+
+bool ESP_SD::exists(const char* path)
+{
+    bool res = false;
+    //root should always be there if started
+    if (strcmp(path, "/") == 0) {
+        return _started;
+    }
+    res = SD.exists(path);
+    if (!res) {
+        ESP_SDFile root = ESP_SD::open(path, ESP_SD_FILE_READ);
+        if (root) {
+            res = root.isDirectory();
+        }
+    }
+    return res;
+}
+
+bool ESP_SD::remove(const char *path)
+{
+    _sizechanged = true;
+    return SD.remove(path);
+}
+
+bool ESP_SD::mkdir(const char *path)
+{
+    return SD.mkdir(path);
+}
+
+bool ESP_SD::rmdir(const char *path)
+{
+    if (!exists(path)) {
+        return false;
+    }
+    bool res = true;
+    GenLinkedList<String > pathlist;
+    String p = path;
+    pathlist.push(p);
+    while (pathlist.count() > 0) {
+        sdfat::File dir = SD.open(pathlist.getLast().c_str());
+        dir.rewindDirectory();
+        sdfat::File f = dir.openNextFile();
+        bool candelete = true;
+        while (f) {
+            if (f.isDir()) {
+                candelete = false;
+                String newdir;
+                char tmp[255];
+                f.getName(tmp,254);
+                newdir = tmp;
+                pathlist.push(newdir);
+                f.close();
+                f = sdfat::File();
+            } else {
+                char tmp[255];
+                f.getName(tmp,254);
+                _sizechanged = true;
+                SD.remove(tmp);
+                f.close();
+                f = dir.openNextFile();
+            }
+        }
+        if (candelete) {
+            if (pathlist.getLast() !="/") {
+                res = SD.rmdir(pathlist.getLast().c_str());
+            }
+            pathlist.pop();
+        }
+        dir.close();
+    }
+    p = String();
+    log_esp3d("count %d", pathlist.count());
+    return res;
+}
+
+void ESP_SD::closeAll()
+{
+    for (uint8_t i = 0; i < ESP_MAX_SD_OPENHANDLE; i++) {
+        tSDFile_handle[i].close();
+        tSDFile_handle[i] = sdfat::File();
+    }
+}
+
+ESP_SDFile::ESP_SDFile(void* handle, bool isdir, bool iswritemode, const char * path)
+{
+    _isdir = isdir;
+    _dirlist = "";
+    _isfakedir = false;
+    _index = -1;
+    _filename = "";
+    _name = "";
+    //TODO: FIXME
+    //forget  what is for
+    (void)path;
+#ifdef FILESYSTEM_TIMESTAMP_FEATURE
+    memset (&_lastwrite,0,sizeof(time_t));
+#endif //FILESYSTEM_TIMESTAMP_FEATURE 
+    _iswritemode = iswritemode;
+    _size = 0;
+    if (!handle) {
+        return ;
+    }
+    bool set =false;
+    for (uint8_t i=0; (i < ESP_MAX_SD_OPENHANDLE) && !set; i++) {
+        if (!tSDFile_handle[i]) {
+            tSDFile_handle[i] = *((sdfat::File*)handle);
+            //filename
+            char tmp[255];
+            tSDFile_handle[i].getName(tmp,254);
+            _filename = tmp;
+            //if root
+            if (_filename == "/") {
+                _filename = "/.";
+            }
+            if (_isdir) {
+                if (_filename[_filename.length()-1] != '.') {
+                    if (_filename[_filename.length()-2] != '/') {
+                        _filename+="/";
+                    }
+                    _filename+=".";
+                }
+            }
+            //name
+            if (_filename == "/.") {
+                _name = "/";
+            } else {
+                _name = _filename;
+                if (_name.endsWith("/.")) {
+                    _name.remove( _name.length() - 2,2);
+                    _isfakedir = true;
+                    _isdir = true;
+                }
+                if (_name[0] == '/') {
+                    _name.remove( 0, 1);
+                }
+                int pos = _name.lastIndexOf('/');
+                if (pos != -1) {
+                    _name.remove( 0, pos+1);
+                }
+            }
+            //size
+            _size = tSDFile_handle[i].size();
+            //time
+#ifdef FILESYSTEM_TIMESTAMP_FEATURE
+            _lastwrite =  tSDFile_handle[i].getLastWrite();
+#endif //FILESYSTEM_TIMESTAMP_FEATURE
+            _index = i;
+            //log_esp3d("Opening File at index %d",_index);
+            set = true;
+        }
+    }
+}
+
+void ESP_SDFile::close()
+{
+    if (_index != -1) {
+        //log_esp3d("Closing File at index %d", _index);
+        tSDFile_handle[_index].close();
+        //reopen if mode = write
+        //udate size + date
+        if (_iswritemode && !_isdir) {
+            sdfat::File ftmp = SD.open(_filename.c_str());
+            if (ftmp) {
+                _size = ftmp.size();
+#ifdef FILESYSTEM_TIMESTAMP_FEATURE
+                _lastwrite = ftmp.getLastWrite();
+#endif //FILESYSTEM_TIMESTAMP_FEATURE
+                ftmp.close();
+            }
+        }
+        tSDFile_handle[_index] = sdfat::File();
+        //log_esp3d("Closing File at index %d",_index);
+        _index = -1;
+    }
+}
+
+ESP_SDFile  ESP_SDFile::openNextFile()
+{
+    if ((_index == -1) || !_isdir) {
+        log_esp3d("openNextFile failed");
+        return ESP_SDFile();
+    }
+    sdfat::File tmp = tSDFile_handle[_index].openNextFile();
+    if (tmp){
+       #if defined(ESP_DEBUG_FEATURE)
+        char tmps[255];
+        tmp.getName(tmps,254);
+        log_esp3d("tmp name :%s %s", tmps, (tmp.isDir())?"isDir":"isFile");
+#endif //ESP_DEBUG_FEATURE
+        ESP_SDFile esptmp(&tmp, tmp.isDir());
+        esptmp.close(); 
+        return esptmp;
+    }
+    return  ESP_SDFile();
+}
+
+const char * ESP_SD::FilesystemName()
+{
+    return "SD native";
+}
+
+#endif //SD_DEVICE == ESP_SD_NATIVE
+#endif //ARCH_ESP32 && SD_DEVICE