A file system is a method used by operating systems to organize, store, manage, and retrieve files on storage devices such as hard drives, SSDs, and USB drives. It defines how data is structured, named, accessed, and stored physically on a device.
In system software, a file system ensures that files and folders are arranged in a hierarchical structure so users and applications can easily locate and manage data. It also handles permissions, storage allocation, and file security.
For example:
- A computer stores documents in folders like “Downloads”, “Documents”, and “Pictures”.
- An operating system saves application data in structured directories.
- A mobile phone organizes photos, videos, and app data using a file system.
- A server manages website files and databases through structured storage paths.
Common types and concepts related to file systems include:
- FAT32
- NTFS
- exFAT
- EXT4 (Linux file system)
- Directories / Folders
- File Paths
- File Permissions
- Storage Devices (HDD, SSD)
- Operating System (OS)
