SD card cannot initialize with Arduino Uno with Datalogging shield

Hello all, I am new to Arduino. I have an Arduino Uno R2 board and datalogging shield. Then tried the following program from the Arduino library. It always gives the following error: Initializing SD card…Initialization failed.
I thought it could be the SD card as it was a 4GB card. (SD Micro card with an adapter and a class 10 SD card.). Therefore, purchased another 2 GB card. Formatting both cards were successful. But the error remains same for both cards.
I have bought another two data logger shields and the result remained same. Arudino version is 1.6.1. IN one of the posts on the forum, it was advised to include digitalWrite(10, HIGH) and that too did not work with any of the cards. Appreciate kind guidance on this. I did not purchase a new Uno board and could it be the board that is not compatible with the current version?
/*
SD card basic file example

This example shows how to create and destroy an SD card file
The circuit:

  • SD card attached to SPI bus as follows:
    ** MOSI - pin 11
    ** MISO - pin 12
    ** CLK - pin 13
    ** CS - pin 4

created Nov 2010
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe

This example code is in the public domain.

*/
#include <SPI.h>
#include <SD.h>

File myFile;

void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}

Serial.print(“Initializing SD card…”);
// On the Ethernet Shield, CS is pin 4. It’s set as an output by default.
// Note that even if it’s not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT);

if (!SD.begin(4)) {
Serial.println(“initialization failed!”);
return;
}
Serial.println(“initialization done.”);

if (SD.exists(“example.txt”)) {
Serial.println(“example.txt exists.”);
}
else {
Serial.println(“example.txt doesn’t exist.”);
}

// open a new file and immediately close it:
Serial.println(“Creating example.txt…”);
myFile = SD.open(“example.txt”, FILE_WRITE);
myFile.close();

// Check to see if the file exists:
if (SD.exists(“example.txt”)) {
Serial.println(“example.txt exists.”);
}
else {
Serial.println(“example.txt doesn’t exist.”);
}

// delete the file:
Serial.println(“Removing example.txt…”);
SD.remove(“example.txt”);

if (SD.exists(“example.txt”)) {
Serial.println(“example.txt exists.”);
}
else {
Serial.println(“example.txt doesn’t exist.”);
}
}

void loop()
{
// nothing happens after setup finishes.
}

Which datalogger is it ? The Adafruit Data Logging Shield ? They have tutorials and libraries for it. An SD card is 3.3V and the Arduino is 5V. I hope you have a level shifter on your Data Logging Shield to connect the 3.3V signals with the 5V signals.

Are you sure that pin 4 is the ChipSelect ?

Pin 10 must be output, like in this example : http://arduino.cc/en/Tutorial/Datalogger On the reference page is also a CardInfo example : http://arduino.cc/en/Reference/SD The CardInfo shows some info about your SD card, but if the hardware or chipselect is wrong, the CardInfo won't work of course.

Did you use the SD Formatter 4.0 to format the SD card ? Read about it here : forum.arduino.cc/index.php?topic=228201.0