How to change cluster size without reformatting?

All file systems that Windows XP uses to organize the hard disk are based on cluster (allocation unit) size, which represents the smallest amount of disk space that can be allocated to hold a file. The smaller the cluster size, the more efficiently your disk stores information. If you do not specify a cluster size for formatting, Windows XP Disk Management bases the cluster size on the size of the volume. Windows XP uses default values if you format a volume as NTFS by either of the following methods: By using the format command from the command line without specifying a cluster size. By formatting a volume in Disk Management without changing the Allocation Unit Size from Default in the Format dialog box. The following table shows the default cluster size for NTFS when Windows XP uses formatting. Default cluster size for FAT file system. These sizes apply to any … Continue reading