 Some third-party tools, like mkdosfs, allow the user to set this parameter.In order to overcome the volume size limit of FAT16, while at the same time allowing DOS real-mode code to handle the format, Microsoft designed a new version of the file system, FAT32, which supported an increased number of possible clusters, but could reuse most of the existing code, so that the conventional memory footprint was increased by less than 5 KiB under DOS.Cluster values are represented by 32-bit numbers, of which 28 bits are used to hold the cluster number.