Select the product you need help with
- Internet Explorer
- Windows Phone
- More products
Description of Default Cluster Sizes for FAT32 File System
Article ID: 192322 - View products that this article applies to.
This article was previously published under Q192322
This article lists the default cluster sizes for drives using the FAT32 file system. The FAT32 file system uses smaller default cluster sizes than the FAT16 file system, resulting in a more efficient file allocation system and the conservation of drive space.
The following tables lists the default cluster sizes used by the FAT32 file system.
Partition size Cluster size ------------------------------------- 512 MB to 8,191 MB 4 KB 8,192 MB to 16,383 MB 8 KB 16,384 MB to 32,767 MB 16 KB Larger than 32,768 MB 32 KB
Note that the FAT32 file system does not support drives smaller than 512 MB.
For more information about the FAT32 file system, see the following articles in the Microsoft Knowledge Base:
TITLE : Description of the FAT32 File System
TITLE : MS-DOS Partitioning Summary