readCluster
if (readCluster(fd, clusterCount,
if (readCluster(fd, secondToLast, &(dirdata.bytes), &dirdatasize,
if (readCluster(fd, freeCluster, &(dirdata.bytes),
if (readCluster(fd, startAt, &(dirdata.bytes), &dirdatasize,
extern int readCluster(int fd, int32_t clusterNum, uchar_t **data,