Arduino SD Memory Shield

//Include all the libraries necessary for FAT32
#include <byteordering.h>
#include <fat.h>
#include <FAT16.h>
#include <fat_config.h>
#include <partition.h>
#include <partition_config.h>
#include <sd-reader_config.h>
#include <sd_raw.h>
#include <sd_raw_config.h>

FAT TestFile;      //This will be the file we manipulate in the sketch
char buffer[512];  //Data will be temporarily stored to this buffer before being written to the file
int read_size=0;   //Used as an indicator for how many characters are read from the file
int count=0;       //Miscellaneous variable

void setup()
{
  Serial.begin(9600);  //Initiate serial communication at 9600 bps

  TestFile.initialize();  //Initialize the SD card and the FAT file system.
  Serial.println("Starting...");
  TestFile.create_file("Sample.txt");  //Create a file on the SD card named "Read_File_Test.txt"
                                       //NOTE: This function will return a 0 value if it was unable to create the  file.
  TestFile.open();  //Now that the file has been created, open it so we can write to it.
}

void loop()
{
  TestFile.write("This is test data.");  //using the write function will always write to the beginning of  the file. 
                                         // Here we add some text to the file.
  TestFile.close();  //We are done writing to the file for now. Close it for later use.

  while(1){
    TestFile.open();  //Open the file. When the file is opened we will be looking at the beginning of  the file.
    read_size=TestFile.read(buffer); //Read the contents of the file. This will only read the amount  of data specified
                                    // by the size of 'buffer.'

    Serial.println(read_size, DEC);  //Print the number of characters read by the read function.
    for(int i=0; i