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OS X El Capitan (/ ɛ l ˌ k æ p ɪ ˈ t ɑː n / el KAP-i-TAHN) (version 10.11) is the twelfth major release of macOS (named OS X at the time of El Capitan's release), Apple Inc.'s desktop and server operating system for Macintosh.
Apple [1] Disk Image is a disk image format commonly used by the macOS operating system. When opened, an Apple Disk Image is mounted as a volume within the Finder.. An Apple Disk Image can be structured according to one of several proprietary disk image formats, including the Universal Disk Image Format (UDIF) from Mac OS X and the New Disk Image Format (NDIF) from Mac OS 9.
Added Support to Install ISO files from USB; 5.0.5033: March 14, 2013 Support for Windows 8 and Windows 8 Pro (64-bit only) Boot Camp support for Macs with a 3 TB hard drive; Drops support for 32-bit Windows 7; Currently only available in OS X Mountain Lion version 10.8.3 and later; 5.1 February 11, 2014
To that end, Apple provides the csrutil command-line utility which can be executed from a Terminal window within the recovery system or a bootable macOS installation disk, which adds a boot argument to the device's NVRAM. This applies the setting to all of the installations of El Capitan or macOS Sierra on the device. [4]
Bill of Materials files or .bom files are used by the macOS Installer program to document where files in an installer bundle are installed, what their file permissions should be, and other file metadata. Thus, a Bill of Materials is read by the Installer, and Archive Utility helps it by extracting the files specified in the BOM.
Since the halt of OpenDarwin and the release of bootable images since Darwin 8.x, it has been increasingly difficult to create a full operating system as many components became closed source. In 2015 the project created a preview release based on Darwin 9 with an X11 GUI, [ 44 ] followed by a command-line only 17.4 Beta based on Darwin 17.
For most users, the most noticeable changes were a difference in the disk space that the operating system frees up after a clean installation when compared to Mac OS X 10.5 Leopard, a more responsive Finder rewritten in Cocoa, faster Time Machine backups, more reliable and user friendly disk ejects, a more powerful version of the Preview ...
Apple File System (APFS) replaces HFS Plus as the default file system in macOS for the first time with High Sierra. [4] It supports 64‑bit inode numbers, is designed for flash memory, and is designed to speed up common tasks like duplicating a file and finding the size of a folder's contents. It also has built‑in encryption, crash‑safe ...