A FAT32 format tool helps you format the hard disk using the FAT32 system. FAT32 is the de-facto file system standard. However, there’s a limitation of this standard. Individual files on a FAT32 drive cannot exceed the 4 GB size limit. Also, the FAT32 partition must be less than 8 TB. This is why FAT32 is considered suitable for USB flash drives or external media but not for an internal drive.