SD Card shield V2.1 - Problem

Enter the chip select pin number: n 8

Adafruit SD shields and modules, pin 10

The default chip select pin number is pin 10

Enter the chip select pin number: SD chip select is the key hardware option.

Common values are:

Arduino Ethernet shield, pin 4

Sparkfun SD shield, pin 8

Adafruit SD shields and modules, pin 10

The default chip select pin number is pin 10

Enter the chip select pin number: 10
SD initialization failed.

Do not reformat the card!

Is the card correctly inserted?

Is chipSelect set to the correct value?

Is there a wiring/soldering problem?

errorCode: 0x1, errorData: 0x0

Restarting