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According to Fast Technology on August 16, Microsoft today pushed the Windows 11Build 27686 preview version update to the Canary channel.

In addition to the new Windows Sandbox Client preview, this update also increases the FAT32 size limit from 32GB to 2TB when formatting a disk from the command line.

This also means that now even a 2TB USB flash drive or mobile hard drive can use the FAT32 format.

Theoretically, the storage capacity supported by FAT32 can reach 16TB, so why does the Windows system still have a 32GB limit? Retired Microsoft engineer Dave Plummer answered this question a few years ago.

Because the large-capacity storage cards on the market at that time were generally only 16MB, if the default cluster size was too large, the cost of wasting disk space would be quite high.

For example, when it is set to 32KB, even a "Hello, World!" program as small as a few bytes will occupy the entire 32KB storage space.

After weighing the pros and cons, Dave finally decided to set the upper limit of the volume formatted with the FAT32 file system to 32GB.