diff --git a/examples/Datalogger/Datalogger.ino b/examples/Datalogger/Datalogger.ino
index c5a509c..592ac68 100644
--- a/examples/Datalogger/Datalogger.ino
+++ b/examples/Datalogger/Datalogger.ino
@@ -26,6 +26,8 @@
 #include <SPI.h>
 #include <SD.h>
 
+using namespace SDLib;
+
 const int chipSelect = 10;
 
 void setup() {
diff --git a/examples/DumpFile/DumpFile.ino b/examples/DumpFile/DumpFile.ino
index b6e9944..b6d1305 100644
--- a/examples/DumpFile/DumpFile.ino
+++ b/examples/DumpFile/DumpFile.ino
@@ -25,6 +25,8 @@
 
 const int chipSelect = 10;
 
+using namespace SDLib;
+
 void setup() {
   // Open serial communications and wait for port to open:
   Serial.begin(9600);
diff --git a/examples/Files/Files.ino b/examples/Files/Files.ino
index 2df0269..64f8b0a 100644
--- a/examples/Files/Files.ino
+++ b/examples/Files/Files.ino
@@ -21,6 +21,8 @@
 */
 #include <SD.h>
 
+using namespace SDLib;
+
 const int chipSelect = 10;
 File myFile;
 
diff --git a/examples/NonBlockingWrite/NonBlockingWrite.ino b/examples/NonBlockingWrite/NonBlockingWrite.ino
index 101bfd0..8a21244 100644
--- a/examples/NonBlockingWrite/NonBlockingWrite.ino
+++ b/examples/NonBlockingWrite/NonBlockingWrite.ino
@@ -33,6 +33,8 @@
 */
 #include <SD.h>
 
+using namespace SDLib;
+
 const int chipSelect = 10;
 
 // file name to use for writing
diff --git a/examples/ReadWrite/ReadWrite.ino b/examples/ReadWrite/ReadWrite.ino
index b505a27..aecbb35 100644
--- a/examples/ReadWrite/ReadWrite.ino
+++ b/examples/ReadWrite/ReadWrite.ino
@@ -20,6 +20,8 @@
 */
 #include <SD.h>
 
+using namespace SDLib;
+
 const int chipSelect = 10;
 File myFile;
 
diff --git a/examples/listfiles/listfiles.ino b/examples/listfiles/listfiles.ino
index ded9b13..1a7be4f 100644
--- a/examples/listfiles/listfiles.ino
+++ b/examples/listfiles/listfiles.ino
@@ -28,6 +28,8 @@
 */
 #include <SD.h>
 
+using namespace SDLib;
+
 const int chipSelect = 10;
 File root;
 
diff --git a/src/File.cpp b/src/File.cpp
index 3e27fb4..bf83f91 100644
--- a/src/File.cpp
+++ b/src/File.cpp
@@ -12,12 +12,14 @@
 
 */
 
-#include <SD.h>
+#include "SD.h"
 
 /* for debugging file open/close leaks
    uint8_t nfilecount=0;
 */
 
+using namespace SDLib;
+
 File::File(SdFile f, const char *n) {
   // oh man you are kidding me, new() doesn't exist? Ok we do it by hand!
   _file = (SdFile *)malloc(sizeof(SdFile));
diff --git a/src/SD.cpp b/src/SD.cpp
index 423db45..5692c14 100644
--- a/src/SD.cpp
+++ b/src/SD.cpp
@@ -50,7 +50,7 @@
 
 */
 
-#include "SD.h"
+#include <SD.h>
 
 namespace SDLib {
 
@@ -366,6 +366,28 @@ namespace SDLib {
            root.openRoot(volume);
   }
 
+  /**
+  Get information about the volume size
+
+  @return Returns the volume size in kB of the first volume/partition
+  */
+  uint32_t SDClass::getVolumeSize()
+  {
+    uint32_t volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
+    volumesize *= volume.clusterCount();       // we'll have a lot of clusters
+    volumesize /= 2;
+    return (volumesize); //2 blocks make 1kB
+  }
+
+  /**
+  Get card type
+  @return 0:none, 1:SDv1, 2:SDv2, 3:SDHC   
+  */
+  uint8_t SDClass::getCardType()
+  {
+    return card.type(); 
+  }
+    
   //call this when a card is removed. It will allow you to insert and initialise a new card.
   void SDClass::end() {
     root.close();
diff --git a/src/SD.h b/src/SD.h
index c81a7d3..ea73ad8 100644
--- a/src/SD.h
+++ b/src/SD.h
@@ -106,6 +106,10 @@ namespace SDLib {
         return rmdir(filepath.c_str());
       }
 
+      uint32_t getVolumeSize();
+
+      uint8_t getCardType();
+      
     private:
 
       // This is used to determine the mode used to open a file
@@ -126,8 +130,6 @@ namespace SDLib {
 // We enclose File and SD classes in namespace SDLib to avoid conflicts
 // with others legacy libraries that redefines File class.
 
-// This ensure compatibility with sketches that uses only SD library
-using namespace SDLib;
 
 // This allows sketches to use SDLib::File with other libraries (in the
 // sketch you must use SDFile instead of File to disambiguate)