File System Organization - Win32 Programmer's Reference

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File System Organization

A volume is a storage device, such as a fixed disk or floppy disk, formatted to store directories and files. Each volume has a root directory. Directories and files on the volume are organized in a tree structure that starts at the root directory. Each directory entry identifies the name, attributes, location, and size of a file or subdirectory.

A large volume can be divided into more than one logical volume, also called a partition. To the user and to the operating system, each partition appears to be a separate volume.

A file system is operating system software that manages the low-level organization of files on a volume. Windows supports one or more of the following file systems:

File Allocation Table (FAT)
New Technology File System (NTFS)

The type of file system defines the filename conventions on a volume and may also provide specific file system features, such as security, recoverability, and high I/O performance. Each volume can use a different file system.

For more information on FAT and New Technology file systems, see File Systems.

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