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For example, the ISO 9660 file system is designed specifically for optical discs.
File systems can be used on numerous different types of storage devices that use different kinds of media.
In computing, a file system or filesystem controls how data is stored and retrieved.
Without a file system, information placed in a storage medium would be one large body of data with no way to tell where one piece of information stops and the next begins.
This results in unused space when a file is not an exact multiple of the allocation unit, sometimes referred to as slack space.
For a 512-byte allocation, the average unused space is 256 bytes.
It handles buffering and memory management and is responsible for the physical placement of blocks in specific locations on the storage medium.The most common storage device in use today is a hard disk drive.Other kinds of media that are used include flash memory, magnetic tapes, and optical discs.In some file systems, filenames are not case sensitive (i.e., the names refer to three separate files).Most modern file systems allow filenames to contain a wide range of characters from the Unicode character set.