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In Windows NT, 2000, or XP, how can I use a specific cluster size on an NTFS drive?

To change or set the cluster size on an NTFS drive in Windows NT, 2000, or XP, you must format it using the /A parameter. Before doing this, be sure to back up any data on that drive. Otherwise, it will be lost.

As an example, if E: is your NTFS volume, and you want 4,096 byte clusters, enter:

FORMAT E: /A:4096

To see all of the available options, enter FORMAT /? in a command window. You will find that for NTFS drives, Windows NT 4.0, 2000, and XP support cluster sizes of 512 bytes, 1,024 bytes, 2,048 bytes, 4,096 bytes, 8,192 bytes, 16KB, 32KB, and 64KB. Generally, a small cluster size is preferable, as this will allow you to store small files with a minimum of lost space. Small cluster sizes are a significant advantage of the NTFS file system.

This is document agmc in domain all.
Last modified on March 16, 2007.

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