// may be called on a Volume that is not in fact a GPT disk (an MBR disk,
// a partition, etc.), in which case it will return EFI_LOAD_ERROR or some
// other error condition. In this case, *Data will be left alone.
// Note also that this function checks CRCs and does other sanity checks
// on the input data, but does NOT resort to using the backup data if the
// may be called on a Volume that is not in fact a GPT disk (an MBR disk,
// a partition, etc.), in which case it will return EFI_LOAD_ERROR or some
// other error condition. In this case, *Data will be left alone.
// Note also that this function checks CRCs and does other sanity checks
// on the input data, but does NOT resort to using the backup data if the