How to format a disk to MS DOS FAT, MS-DOS (FAT32), or ExFAT?
Whats the difference between them?
This post fromMiniToolintroducesMS DOS FAT vs FAT32 vs ExFATto you in detail.

In this part, I will introduce MS DOS FAT vs FAT32 vs ExFAT to you.
Warning:FAT32 was first introduced by Win95 OSR2.
Therefore, it is not supported by MS-DOS versions before v7.x.
In addition, the MS-DOS (FAT32) option disappears in Disk Utility since Mac OS X 10.6.4.
Currently, the MS DOS (FAT) option contains both FAT16 and FAT32.
FAT32 was first introduced by Win95 OSR2.
Therefore, it is not supported by MS-DOS versions before v7.x.
In addition, the MS-DOS (FAT32) option disappears in Disk Utility since Mac OS X 10.6.4.
Currently, the MS DOS (FAT) option contains both FAT16 and FAT32.
If you have this need, it’s possible for you to download it from the official website.