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Apple File System. Apple File System (APFS) is a proprietary file system developed and deployed by Apple Inc. for macOS Sierra (10.12.4) [6] and later, iOS 10.3, tvOS 10.2, [7] watchOS 3.2, [8] and all versions of iPadOS. [9][10] It aims to fix core problems of HFS+ (also called Mac OS Extended), APFS's predecessor on these operating systems.
HFS Plus or HFS+ (also known as Mac OS Extended or HFS Extended) 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. HFS+ continued as the primary Mac OS X file system until it was itself replaced with the Apple File ...
Limits. While storage devices usually have their size expressed in powers of 10 (for instance a 1 TB Solid State Drive will contain at least 1,000,000,000,000 (10 12, 1000 4) bytes), filesystem limits are invariably powers of 2, so usually expressed with IEC prefixes. For instance, a 1 TiB limit means 2 40, 1024 4 bytes.
It was first introduced in Mac OS X 10.5 Leopard, which was released in October 2007 and incrementally refined in subsequent releases of macOS. Time Machine was revamped in macOS 11 Big Sur to support APFS, thereby enabling "faster, more compact, and more reliable backups" than were possible previously. [1] [2]
Apple Partition Map. Apple Partition Map (APM) is a partition scheme used to define the low-level organization of data on disks formatted for use with 68k and PowerPC Macintosh computers. It was introduced with the Macintosh II. [1] Disks using the Apple Partition Map are divided into logical blocks, with 512 bytes usually belonging to each block.
Time Machine, the backup mechanism introduced back in Mac OS X 10.5 Leopard, has been overhauled to utilize the APFS file system (introduced in MacOS High Sierra) instead of the outdated HFS+. Specifically, the new version of Time Machine makes use of APFS's snapshot technology.
Discouraged null and non-printing characters. 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.
The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...