The operating system keeps track of all this in a file allocation table
(FAT), but when you delete a file, you are only deleting the entry in the FAT.
There's a master directory in the computer called the File Allocation Table
Most older computers running DOS or Windows organize their hard disks with a 16-bit File Allocation Table
The system area on a floppy disk consists of three sections: 1) the boot record, 2) the file allocation table
(FAT), and 3) the root directory.
A File Allocation Table
(FAT) on each disk provides the DOS operating system with the information it needs to retrieve the scattered pieces and assemble a complete file.
When a user issues one of these commands, the computer finds the file in the file allocation table
(FAT) and removes the first character of the file name.