HFS+

Technology & Computing abbreviation · Computer

HFS+
Stands forHierarchical File System Plus
CategoriesTechnology & Computing

HFS+ stands for Hierarchical File System Plus, a computer abbreviation.

Apple's main Mac file system from 1998 until APFS replaced it in 2017, shown in Disk Utility as Mac OS Extended. It survives on older Macs, hard-drive backups and early iPods.

Example: Disk Utility lists the old backup drive as Mac OS Extended (Journaled), which is HFS+.

Usage notes

Introduced with Mac OS 8.1, HFS+ succeeded the original HFS from 1985; a journaled version added in 2002 reduced corruption after crashes. Time Machine backups made before macOS Big Sur typically use it. Windows needs third-party drivers to read HFS+ drives, and Linux support for writing to them is limited.

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