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JSI Tip 9225. What is the maximum file size, volume size, clusters per volume, and number of files per volume for the FAT16, FAT32, and NTFS file systems? A Web Exclusive from FAQ for Windows Jerold Schulman File systems InstantDoc #83370 FAQ for Windows	Email this Article Printer Friendly Reader Comments Digg This Del.icio.us RSS
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9225 » What is the maximum file size, volume size, clusters per volume, and number of files per volume for the FAT16, FAT32, and NTFS file systems? 05-Apr-05

The following table contains the subject limits:

    FAT16     FAT32
    NTFS

    Maximum File Size     2³² - 1 bytes     2³² - 1 bytes
    2⁶⁴ bytes - 1 KB (Theoretical)
    2⁴⁴ bytes - 64 KB (Implementation)

    Maximum Volume Size     4 GB     32 GB
    2⁶⁴ allocation units (Theoretical)
    2³² allocation units (Implementation)

    Clusters per Volume     65,535 Max.         65,527 - 4,177,918
    2⁶⁴ (Theoretical)
    2³² (Implementation)

    Maximum Files per Volume         2¹⁶     2²² (~4 million)
    2³² - 1

NOTE: See default allocation unit sizes.

NOTE: The current practical limit for an NTFS volume is 2 terabytes (2³² * 512 byte sectors) because the industry standard partition table maximum is 2³² sectors.

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JSI Tip 9225. What is the maximum file size, volume size, clusters per volume, and number of files per volume for the FAT16, FAT32, and NTFS file systems?

9225 » What is the maximum file size, volume size, clusters per volume, and number of files per volume for the FAT16, FAT32, and NTFS file systems? 05-Apr-05