volumesize *= volume.clusterCount();

// we'll have a lot of clusters

volumesize *= 512;

// SD card blocks are always

512 bytes

Serial.print("Volume size (bytes): ");

Serial.println(volumesize);

Serial.print("Volume size (Kbytes): ");

volumesize /= 1024;

Serial.println(volumesize);

Serial.print("Volume size (Mbytes): ");

volumesize /= 1024;

Serial.println(volumesize);

Serial.println("\nFiles found on the card (name, date and size in bytes): "

);

root.openRoot(volume);

// list all files in the card with date and size

root.ls(LS_R | LS_DATE | LS_SIZE);

}

void loop(void) {

}

Result

If your SD card is good and wiring is correct, open the Arduino IDE serial monitor, then you can see

your SD card information. Or you might get this warn shown in the right picture.