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A Good Way to Change Cluster Size of FAT32 Partition in Windows

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    When we are creating partitions in Windows Disk Management, cluster size (Microsoft calls it allocation unit size) will be set by default if we do not make a choice. Different cluster size will be allocated to different partitions. Nevertheless, after a period of time we may find the default cluster size is unreasonable since it will bring influence on data read-write speed and disk space use ratio. For more information, please see Change Cluster Size. Well then, how to change cluster size of FAT32 partition?

    In general situations, once the cluster size is settled, users will be unable to change it unless formatting the partition. Nevertheless, formatting will result in data loss unless a backup is made in advance. Well then, is there a way to change cluster size of FAT32 partition without any data loss? Users need the help of third party partition manager. Here, we suggest MiniTool Partition Wizard professional edition for non server users and Server edition for server users. This program is powerful, safe enough, and easy to use. Next, let’s see detailed operating steps.

    Change Cluster Size of FAT32 Partition with MiniTool Partition Wizard


    Firstly, please download and install the partition manager to computer. Then, launch it to get the main interface shown below:

    change cluster size fat32 partition select target partition

    Now please select the FAT32 partition whose cluster size should be modified and choose “Change Cluster Size” from the left pane to get the window below:

    change cluster size fat32 partition choose reaonable cluster size

    In this interface we can see the current cluster size as well as set new cluster size for the selected partition. Please choose desired one from the drop-down menu and click “Yes” to go back to the main interface below:

    change cluster size fat32 partition apply change

    Now a pending operation emerges on the left action panel. Please click “Apply” button on the top to apply the pending change to computer. Once the application is completely by MiniTool Partition Wizard, cluster size of the selected FAT32 partition will be set successfully.

    Now use this partition manager to change the cluster size of your FAT32 partition or NTFS partition reasonably by considering file size and data read-write speed.