Mac Os X Diagram Software

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Additional diagram of macOS architecture (2017 update)

The architecture of macOS describes the layers of the operating system that is the culmination of Apple Inc.'s decade-long research and development process to replace the classic Mac OS.

After the failures of their previous attempts; Pink, which started as an Apple project but evolved into a joint venture with IBM called Taligent, and Copland, which started in 1994 and was cancelled two years later, Apple began development of Mac OS X with the acquisition of NeXT's NeXTSTEP in 1997.

Note that Mac OS X was renamed to OS X in 2012 and then again to macOS in 2016.

Mac hard drive copy software free. Every file on your drive—including thousands of hidden files—must be copied just so, with permissions and other metadata intact. And, crucially, the System folder (/System) on the backup drive must be “blessed,” which entails recording its physical location on the drive in a special portion of the drive’s hidden HFS Volume Header. Symbolic links (Unix-based file references that function like Mac aliases) must be recreated correctly. (Your Mac’s built-in features include Disk Utility, but sometimes you need a drive-repair app with more oomph.) Finally, having a clone is essential when upgrading to a new version of OS X, because it gives you the option to easily revert to your previous system (by erasing your upgraded-OS drive and then restoring from the clone) if compatibility problems arise.There’s app for thatUnfortunately, you can’t make a clone merely by copying files from your startup volume to an external drive in the Finder. A clone also comes in handy for troubleshooting, because you can use it to run third-party utilities on your ailing drive.



Mac Os X Download

NeXTSTEP used a hybrid kernel that combined the Mach 2.5 kernel developed at Carnegie Mellon University with subsystems from 4.3BSD. NeXTSTEP also introduced a new windowing system based on Display PostScript that intended to achieve better WYSIWYG systems by using the same language to draw content on monitors that drew content on printers. NeXT also included object-oriented programming tools based on the Objective-C language that they had acquired from Stepstone and a collection of Frameworks (or Kits) that were intended to speed software development. NeXTSTEP originally ran on Motorola's 68k processors, but was later ported to Intel's x86, Hewlett-Packard's PA-RISC and Sun Microsystems' SPARC processors. Later on, the developer tools and frameworks were released, as OpenStep, as a development platform that would run on other operating systems.


On February 4, 1997, Apple acquired NeXT and began development of the Rhapsody operating system. Rhapsody built on NeXTSTEP, porting the core system to the PowerPC architecture and adding a redesigned user interface based on the Platinum user interface from Mac OS 8. An emulation layer called Blue Box allowed Mac OS applications to run within an actual instance of the Mac OS and an integrated Java platform.[1] The Objective-C developer tools and Frameworks were referred to as the Yellow Box and also made available separately for Microsoft Windows. The Rhapsody project eventually bore the fruit of all Apple's efforts to develop a new generation Mac OS, which finally shipped in the form of Mac OS X Server.

Mac OS X[edit]

A diagram of the Mac OS X architecture

At the 1998 Worldwide Developers Conference (WWDC), Apple announced a move that was intended as a response to complaints from Macintosh software developers who were not happy with the two options (Yellow Box and Blue Box) available in Rhapsody. Mac OS X would add another developer API to the existing ones in Rhapsody. Key APIs from the Macintosh Toolbox would be implemented in Mac OS X to run directly on the BSD layers of the operating system instead of in the emulated Macintosh layer. This modified interface, called Carbon, would eliminate approximately 2000 troublesome API calls (of about 8000 total) and replace them with calls compatible with a modern OS.[2]

At the same conference, Apple announced that the Mach side of the kernel had been updated with sources from the OSFMK 7.3 (Open Source Foundation Mach Kernel) [3] and the BSD side of the kernel had been updated with sources from the FreeBSD, NetBSD and OpenBSD projects.[2] They also announced a new driver model called I/O Kit, intended to replace the Driver Kit used in NeXTSTEP citing Driver Kit's lack of power management and hot-swap capabilities and its lack of automatic configuration capability.[4]

At the 1999 WWDC, Apple revealed Quartz, a new Portable Document Format (PDF) based windowing system for the operating system that was not encumbered with licensing fees to Adobe like the Display PostScript windowing system of NeXTSTEP. Apple also announced that the Yellow Box layer had been renamed Cocoa and began to move away from their commitment to providing the Yellow Box on Windows. At this WWDC, Apple also showed Mac OS X booting off of a HFS Plus formatted drive for the first time.

The first public release of Mac OS X released to consumers was a Public Beta released on September 13, 2000.


  1. ^Apple PR (1997-11-19). 'Apple Extends Rhapsody Developer Release with Mac OS Compatibility Environment, Code-Named 'Blue Box''. Archived from the original on 1998-12-02. Retrieved 2006-10-13.
  2. ^ abScott Anguish (May 1998). 'WWDC 98 Summary'. Retrieved 2006-10-13.[dead link]
  3. ^Apple WWDC Videos (2017-02-19), Apple WWDC 2000 Session 106 - Mac OS X: Kernel, retrieved 2018-07-06
  4. ^Scott Anguish (1998-05-14). 'Rhapsody Core OS: Intro to the I/O Driver Architecture'. Retrieved 2006-10-13.[dead link]

External links[edit]

Mac Os X Diagram Software
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Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

Mac os x free software

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

Mac os software list. Network Inventory Advisor for Mac v.1.1.2573 Network Inventory Advisor for Mac is an agentless remote Mac inventory software. It discovers all network OS X nodes by IP or network names, scans them for technical data from System Profiler and compiles great-looking customizable reports.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

macOSLatest version
macOS Catalina
macOS Mojave10.14.6
macOS High Sierra10.13.6
macOS Sierra10.12.6
OS X El Capitan10.11.6
OS X Yosemite10.10.5
OS X Mavericks10.9.5
OS X Mountain Lion10.8.5
OS X Lion10.7.5
Mac OS X Snow Leopard10.6.8
Mac OS X Leopard10.5.8
Mac OS X Tiger10.4.11
Mac OS X Panther10.3.9
Mac OS X Jaguar10.2.8
Mac OS X Puma10.1.5
Mac OS X Cheetah10.0.4

Learn more

  • Always use the macOS that came with your Mac, or a compatible newer version.
  • Learn how to reinstall macOS from macOS Recovery.