Apple File System

Apple File System (APFS) is a proprietary drive format system that Apple introduced in MacOS 10.13 "High Sierra" in 2017. It was also adopted in iOS 10.3, tvOS 10.2, and watchOS 3.2.

APFS is designed to accommodate the use of solid-state drive storage across Apple's product line and address shortcomings of the long-used HFS Plus (Mac OS Extended) drive format, such as the 2040 date limit.