Definition Of Hierarchical File System

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Hierarchical File System
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Developer Apple Computer
Full name Hierarchical File System
Introduced September 17, 1985 (System 2.1)
Partition identifier Apple_HFS (Apple Partition Map)
0xAF (MBR)
Directory contents B-tree
File allocation Bitmap
Bad blocks B-tree
Max. volume size 2 TB (2 × 10244 bytes)
Max. file size 2 GB (2 × 10243 bytes)
Max. number of files 65535
Max. filename length 31 characters
Allowed characters in filenames All 8-bit values except colon ":". Discouraged null and nonprints.
Dates recorded Creation, modification, backup
Date range January 1, 1904 - February 6, 2040
Date resolution 1s
Forks Only 2 (data and resource)
Attributes Color (3 bits, all other flags 1 bit), locked, custom icon, bundle, invisible, alias, system, stationery, inited, no INIT resources, shared, desktop
File system permissions AppleShare
Transparent compression Yes (third-party), Stacker
Transparent encryption No
Supported operating systems Mac OS, OS X, Linux, Microsoft Windows (through MacDrive or Boot Camp[citation needed] IFS drivers)
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. HFS is also referred to as Mac OS Standard (or, erroneously, "HFS Standard"), while its successor, HFS Plus, is also called Mac OS Extended
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