A file system consists of blocks of data. The number of bytes constituting a block varies depending on the OS. The internal physical structure of a hard disk consists of cylinders. The hard disk is divided into groups of cylinders known as cylinder groups, further divided into blocks.
The file system is comprised of five main blocks:
The boot block is part of the disk label that contains a loader used to boot the operating system.
All partitions within the Unix filing system usually contain a special block called the super block. The super block contains the basic information about the entire file system. It stores the following details about ...