APFS

Technology & Computing abbreviation · Computer

APFS
Stands forApple File System
CategoriesTechnology & Computing

APFS stands for Apple File System, a computer abbreviation.

File system used by macOS, iOS, iPadOS, watchOS and tvOS since 2017, optimized for SSDs with instant file cloning, snapshots, strong encryption and space sharing between volumes.

Example: Format the backup drive as APFS before setting up Time Machine on the new MacBook.

Usage notes

APFS replaced HFS+, arriving on iPhones with iOS 10.3 and on Macs with macOS High Sierra. Since macOS Big Sur the system volume is a sealed, read-only snapshot, which makes tampering easy to detect. Copying a file within one APFS volume can be nearly instant because the clone shares data blocks until either copy changes. Windows cannot read APFS without third-party software.

More computer abbreviations

  • ACPI – Advanced Configuration and Power Interface
  • AD – Active Directory
  • Alt – Alternate key
  • AltGr – Alternate Graphic key
  • ASCII – American Standard Code for Information Interchange
  • BIOS – Basic Input/Output System
  • BOM – Byte order mark
  • BSOD – Blue Screen of Death
  • Btrfs – B-tree file system
  • BYOD – Bring your own device
  • CAD – Computer-aided design
  • CAM – Computer-aided manufacturing

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