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Hierarchical File System (HFS) is a proprietary file system developed by Apple Inc. for use in computer systems running Mac OS. Originally designed for use on floppy and hard disks , it can also be found on read-only media such as CD-ROMs .
Example of a directory structure in a hierarchical file system. In computing, a hierarchical file system is a file system that uses directories to organize files into a tree structure. [1] In a hierarchical file system, directories contain information about both files and other directories, called subdirectories which, in turn, can point to ...
HFS Plus or HFS+ (also known as Mac OS Extended or HFS Extended [5]) is a journaling file system developed by Apple Inc. It replaced the Hierarchical File System (HFS) as the primary file system of Apple computers with the 1998 release of Mac OS 8.1.
IBM's Hierarchical File System (HFS) is a POSIX-style hierarchical file system [1] for the MVS/ESA/SP through z/OS operating systems. IBM introduced HFS on February 9, 1993 in MVS/ESA System Product Version 4 Release 3 OpenEdition [ 2 ] [ 3 ] with DFSMS/MVS Version 1 Release 2 [ 4 ] for 3090 mainframes.
HFS – Hierarchical File System in IBM's MVS from MVS/ESA OpenEdition through z/OS V2R4; not to be confused with Apple's HFS. IBM stated that z/OS users should migrate from HFS to zFS, and in z/OS V2R5 dropped support for HFS. HFS – Hierarchical File System, in use until HFS+ was introduced on Mac OS 8.1. Also known as Mac OS Standard format.
Apple File System was announced at Apple's developers’ conference (WWDC) in June 2016 as a replacement for HFS+, which had been in use since 1998. [11] [12] APFS was released for 64-bit iOS devices on March 27, 2017, with the release of iOS 10.3, and for macOS devices on September 25, 2017, with the release of macOS 10.13.
Apple_HFS: Hierarchical File System: Apple_HFS: While normally a HFS or HFS+ volume for Mac OS and Mac OS X, it can also contain an MS-DOS formatted file system (File Allocation Table, which can be accessed by Mac OS and Mac OS X). Apple_HFSX: HFS Plus: This partition contains a HFS+ volume without a HFS wrapper.
The Macintosh File System does not support volumes over 20 MB in size, or about 1,400 files. [citation needed] While this is small by today's standards, at the time it seemed very expansive when compared to the Macintosh's 400 KB floppy drive. Apple introduced Hierarchical File System as a replacement for MFS