In August 2024, Microsoft announced a significant update in Windows 11 Insider Preview Build 27686, lifting the long-standing 32GB size limit for FAT32 partitions. This change allows users to create FAT32 partitions up to 2TB in size directly through the command-line INLINECODE0 command. (bleepingcomputer.com)

Background on FAT32 Limitations

FAT32, introduced in the mid-1990s, has been a widely used file system due to its broad compatibility across various devices and operating systems. However, it has inherent limitations, notably the 32GB partition size cap imposed by Windows' graphical user interface (GUI). This restriction has often frustrated users needing to format larger drives. (theverge.com)

The 32GB Limit and Its Origins

The 32GB limit was established during the development of Windows 95. Former Windows developer Dave Plummer, responsible for the format dialog box, revealed that the 32GB cap was an arbitrary decision made in the 1990s. He noted that the limit was set to avoid excessive "cluster slack," which could lead to inefficient disk usage. (arstechnica.com)

Implications of the Update

With the removal of the 32GB limit, users can now format FAT32 partitions up to 2TB using the command-line INLINECODE1 command. This enhancement is particularly beneficial for those who require FAT32 for compatibility with older devices or specific applications. It's important to note that this change currently applies only to the command-line tool; the GUI-based formatting tool in Windows still enforces the 32GB limit. (bleepingcomputer.com)

Considerations and Limitations

While the increased partition size is advantageous, FAT32 retains its inherent limitations, such as a maximum individual file size of 4GB minus 1 byte. Users needing to store larger files should consider alternative file systems like NTFS or exFAT, which support larger file sizes and offer additional features. (theverge.com)

Conclusion

Microsoft's decision to lift the 32GB limit on FAT32 partitions in Windows 11 Canary Build 27686 addresses a long-standing user concern, enhancing the flexibility and usability of the FAT32 file system. This update reflects Microsoft's responsiveness to user feedback and its commitment to improving the Windows experience.