Arduino Uno and ATMEL memory chip using SPI

So now I'm trying to figure out how to read data back after it has been powered off. I execute the readEEPROM command right in the setup function before anything else has been executed.

int reading;
for (int I=0;I<100;I=I+2)
  {
    readEEPROM (I, &reading, sizeof reading);
    Serial.println (reading);
  }

The results I get back are all 255 (hex FF). I know these addresses were previously written to with different values, and I'm not sure what to do from here. Any ideas?