Returns:
            int: MFT record size in bytes

def mft_record_size(self):
        """
        Returns:
            int: MFT record size in bytes
        """
        if self.extended_bpb.clusters_per_mft < 0:
            return 2 ** abs(self.extended_bpb.clusters_per_mft)
        else:
            return self.clusters_per_mft * self.sectors_per_cluster * \
                self.bytes_per_sector