Reference Guide - Hard Disk Drives  A Brief History of the Hard Disk Drive Construction and Operation of the Hard Disk Drive Hard Disk Geometry and Low-Level Data Structures Hard Disk Performance, Quality and Reliability Hard Disk BIOS and Capacity Factors Hard Disk Interfaces and Configuration Hard Disk Logical Structures and File Systems Operating Systems and File Systems PC File Systems Major Disk Structures and the Boot Process Master Boot Record (MBR) Primary, Extended and Logical Partitions Volume Boot Sectors Active Partitions and Boot Managers The DOS Boot Process Boot Sector Viruses FAT File System Disk Volume Structures Clusters and File Allocation Partitioning, Partition Sizes and Drive Lettering Disk Partitioning and Formatting Programs Disk Compression Author: Charles M. Kozierok  There are several major disk structures that are used to organize and control the storage of information on the PC using the FAT / FAT32 / VFAT file system. These structures are important to understand, since they control the way the hard disk works from a software perspective. Next: Master Boot Record (MBR)

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