A file allocation table is a way that computers look up stored data on a storage gear.
These devices include floppy disks, USB flash drives, SD cards and other high capacity storage devices.
you might read this article to know more about it.
What Is File Allocation Table (FAT)?
What is file allocation table?
you’ve got the option to simply say it is a table in which the file is located.
Boot sector:It is also called reserved sector, and located in the first part.
Root directory area:This area is a directory table containing information about directories and files.
It only works with FAT12 and FAT16.
It has a fixed maximum size and is configured at creation time.
FAT32 usually stores the root directory in the data area, so it can be extended as needed.
Data area:This is where directory data and existing files are stored.
It occupies most of the partitions on the disk.
It was introduced in 1980.
It is almost never used at all since it is too small.
Now you say FAT often means FAT32.
