diff --git a/Marlin/src/HAL/HAL_AVR/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_AVR/persistent_store_eeprom.cpp
index f1489e70d6..293955937f 100644
--- a/Marlin/src/HAL/HAL_AVR/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_AVR/persistent_store_eeprom.cpp
@@ -1,3 +1,24 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016, 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it 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.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 #ifdef __AVR__
 
 #include "../../inc/MarlinConfig.h"
@@ -41,21 +62,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;  // always assume success for AVR's
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS
 #endif // __AVR__
diff --git a/Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp
index ad66b7b920..3bf0f443b3 100644
--- a/Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp
@@ -1,3 +1,25 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it 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.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 #ifdef ARDUINO_ARCH_SAM
 
 #include "../persistent_store_api.h"
@@ -49,21 +71,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS
 #endif // ARDUINO_ARCH_SAM
diff --git a/Marlin/src/HAL/HAL_LPC1768/persistent_store_sdcard.cpp b/Marlin/src/HAL/HAL_LPC1768/persistent_store_sdcard.cpp
index 630ab073ea..42264e1ccc 100644
--- a/Marlin/src/HAL/HAL_LPC1768/persistent_store_sdcard.cpp
+++ b/Marlin/src/HAL/HAL_LPC1768/persistent_store_sdcard.cpp
@@ -1,9 +1,10 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (C) 2016, 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
- * Based on Sprinter and grbl.
- * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -98,8 +99,8 @@ bool PersistentStore::access_finish() {
 //    FR_INVALID_PARAMETER     /* (19) Given parameter is invalid */
 //  } FRESULT;
 
-bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
-  if(!eeprom_file_open) return true;
+bool PersistentStore::write_data(int &pos, const uint8_t *value, const size_t size, uint16_t *crc) {
+  if (!eeprom_file_open) return true;
   FRESULT s;
   UINT bytes_written = 0;
 
@@ -113,7 +114,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
    return s;
   }
 
-  s = f_write(&eeprom_file, (void *)value, size, &bytes_written);
+  s = f_write(&eeprom_file, (void*)value, size, &bytes_written);
   if (s) {
    SERIAL_PROTOCOLPAIR(" write_data(", pos);         // This extra chit-chat goes away soon.  But it is helpful
    SERIAL_PROTOCOLPAIR(",", (int)value);            // right now to see errors that are happening in the
@@ -129,57 +130,51 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
   return (bytes_written != size);  // return true for any error
 }
 
-bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
-  if(!eeprom_file_open) return true;
+bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  if (!eeprom_file_open) return true;
   UINT bytes_read = 0;
   FRESULT s;
   s = f_lseek(&eeprom_file, pos);
+
   if (s) {
-   SERIAL_PROTOCOLPAIR(" read_data(", pos);          // This extra chit-chat goes away soon.  But it is helpful
-   SERIAL_PROTOCOLPAIR(",", (int)value);            // right now to see errors that are happening in the
-   SERIAL_PROTOCOLPAIR(",", size);             // read_data() and write_data() functions
+   SERIAL_PROTOCOLPAIR(" read_data(", pos);         // This extra chit-chat goes away soon.  But it is helpful
+   SERIAL_PROTOCOLCHAR(',');
+   SERIAL_PROTOCOL((int)value);                     // right now to see errors that are happening in the
+   SERIAL_PROTOCOLCHAR(',');
+   SERIAL_PROTOCOL(size);                           // read_data() and write_data() functions
    SERIAL_PROTOCOLLNPGM("...)");
    SERIAL_PROTOCOLLNPAIR(" f_lseek()=", (int)s);
    return true;
   }
+
   if (writing) {
-    s = f_read(&eeprom_file, (void *)value, size, &bytes_read);
+    s = f_read(&eeprom_file, (void*)value, size, &bytes_read);
     crc16(crc, value, size);
   }
   else {
     uint8_t temp[size];
-    s = f_read(&eeprom_file, (void *)temp, size, &bytes_read);
+    s = f_read(&eeprom_file, (void*)temp, size, &bytes_read);
     crc16(crc, temp, size);
   }
+
   if (s) {
    SERIAL_PROTOCOLPAIR(" read_data(", pos);         // This extra chit-chat goes away soon.  But it is helpful
-   SERIAL_PROTOCOLPAIR(",", (int)value);           // right now to see errors that are happening in the
-   SERIAL_PROTOCOLPAIR(",", size);            // read_data() and write_data() functions
+   SERIAL_PROTOCOLCHAR(',');
+   SERIAL_PROTOCOL((int)value);                     // right now to see errors that are happening in the
+   SERIAL_PROTOCOLCHAR(',');
+   SERIAL_PROTOCOL(size);                           // read_data() and write_data() functions
    SERIAL_PROTOCOLLNPGM("...)");
    SERIAL_PROTOCOLLNPAIR(" f_write()=", (int)s);
    SERIAL_PROTOCOLPAIR(" size=", size);
    SERIAL_PROTOCOLLNPAIR("\n bytes_read=",  bytes_read);
    return true;
   }
+
   pos = pos + size;
   return bytes_read != size;  // return true for any error
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return 4096; //4KiB of Emulated EEPROM
-}
+const size_t PersistentStore::capacity() { return 4096; } // 4KiB of Emulated EEPROM
 
 #endif // EEPROM_SETTINGS
 #endif // TARGET_LPC1768
diff --git a/Marlin/src/HAL/HAL_STM32F1/persistent_store_flash.cpp b/Marlin/src/HAL/HAL_STM32F1/persistent_store_flash.cpp
index c6be9c179d..779225d093 100644
--- a/Marlin/src/HAL/HAL_STM32F1/persistent_store_flash.cpp
+++ b/Marlin/src/HAL/HAL_STM32F1/persistent_store_flash.cpp
@@ -55,7 +55,7 @@ bool PersistentStore::access_finish() {
   return true;
 }
 
-bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+bool PersistentStore::write_data(int &pos, const uint8_t *value, const size_t size, uint16_t *crc) {
   FLASH_Status status;
 
   if (firstWrite) {
@@ -90,7 +90,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
   return false;
 }
 
-bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
   for (uint16_t i = 0; i < size; i++) {
     byte* accessPoint = (byte*)(pageBase + pos + i);
     uint8_t c = *accessPoint;
@@ -101,22 +101,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
-
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS && EEPROM FLASH
 #endif // __STM32F1__
diff --git a/Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp b/Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp
index b5b4d424a6..26e011cf1d 100644
--- a/Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp
+++ b/Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp
@@ -60,7 +60,7 @@ bool PersistentStore::access_finish() {
   return (bytes_written == HAL_STM32F1_EEPROM_SIZE);
 }
 
-bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+bool PersistentStore::write_data(int &pos, const uint8_t *value, const size_t size, uint16_t *crc) {
   for (int i = 0; i < size; i++)
     HAL_STM32F1_eeprom_content[pos + i] = value[i];
   crc16(crc, value, size);
@@ -68,7 +68,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
   return false;
 }
 
-bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
   for (int i = 0; i < size; i++) {
     uint8_t c = HAL_STM32F1_eeprom_content[pos + i];
     if (writing) value[i] = c;
@@ -78,21 +78,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return HAL_STM32F1_EEPROM_SIZE;
-}
+const size_t PersistentStore::capacity() { return HAL_STM32F1_EEPROM_SIZE; }
 
 #endif // EEPROM_SETTINGS
 
diff --git a/Marlin/src/HAL/HAL_STM32F4/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_STM32F4/persistent_store_eeprom.cpp
index 6d262ae385..33a92f99d3 100644
--- a/Marlin/src/HAL/HAL_STM32F4/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_STM32F4/persistent_store_eeprom.cpp
@@ -64,21 +64,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS
 #endif // STM32F4 || STM32F4xx
diff --git a/Marlin/src/HAL/HAL_STM32F7/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_STM32F7/persistent_store_eeprom.cpp
index 19f61153c5..a765d2e68d 100644
--- a/Marlin/src/HAL/HAL_STM32F7/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_STM32F7/persistent_store_eeprom.cpp
@@ -21,7 +21,6 @@
  *
  */
 
-
 #ifdef STM32F7
 
 #include "../../inc/MarlinConfig.h"
@@ -65,21 +64,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS
 #endif // STM32F7
diff --git a/Marlin/src/HAL/HAL_TEENSY35_36/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_TEENSY35_36/persistent_store_eeprom.cpp
index 453287797d..871e588774 100644
--- a/Marlin/src/HAL/HAL_TEENSY35_36/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_TEENSY35_36/persistent_store_eeprom.cpp
@@ -1,3 +1,26 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it 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.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
 #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
 
 #include "../../inc/MarlinConfig.h"
@@ -42,21 +65,7 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-bool PersistentStore::write_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return write_data(data_pos, value, size, &crc);
-}
-
-bool PersistentStore::read_data(const int pos, uint8_t* value, size_t size) {
-  int data_pos = pos;
-  uint16_t crc = 0;
-  return read_data(data_pos, value, size, &crc);
-}
-
-const size_t PersistentStore::capacity() {
-  return E2END + 1;
-}
+const size_t PersistentStore::capacity() { return E2END + 1; }
 
 #endif // EEPROM_SETTINGS
 #endif // __MK64FX512__ || __MK66FX1M0__
diff --git a/Marlin/src/HAL/persistent_store_api.cpp b/Marlin/src/HAL/persistent_store_api.cpp
index 303027b37d..68afa63620 100644
--- a/Marlin/src/HAL/persistent_store_api.cpp
+++ b/Marlin/src/HAL/persistent_store_api.cpp
@@ -1,9 +1,10 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
- * Based on Sprinter and grbl.
- * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/Marlin/src/HAL/persistent_store_api.h b/Marlin/src/HAL/persistent_store_api.h
index b8aea044a3..278e49a8ad 100644
--- a/Marlin/src/HAL/persistent_store_api.h
+++ b/Marlin/src/HAL/persistent_store_api.h
@@ -1,9 +1,10 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
- * Based on Sprinter and grbl.
- * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -30,9 +31,19 @@ public:
   static bool access_finish();
   static bool write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc);
   static bool read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing=true);
-  static bool write_data(const int pos, uint8_t* value, size_t size);
-  static bool read_data(const int pos, uint8_t* value, size_t size);
   static const size_t capacity();
+
+  static inline bool write_data(const int pos, uint8_t* value, const size_t size) {
+    int data_pos = pos;
+    uint16_t crc = 0;
+    return write_data(data_pos, value, size, &crc);
+  }
+
+  static inline bool read_data(const int pos, uint8_t* value, const size_t size) {
+    int data_pos = pos;
+    uint16_t crc = 0;
+    return read_data(data_pos, value, size, &crc);
+  }
 };
 
 extern PersistentStore persistentStore;