The operating system was purchased at 29.99$ on Mac App Store. It was the first version of the Macintosh operating system where it was distributed without any physical media.

And after few days on Jthe final version was released on Mac App Store. Still it was not available for the users until Jwhen it was released to manufacturing. While on February 24, 2011, the first developer’s preview of Lion was released which was only access able the users who had subscribed to the Apple Developer Program. It was publicly shown on Octoat a special occasion called “Back to Mac”. Mac OS X Lion (10.7) is the eighth major release by Apple in the Mac OS X series. Mac App Store was a massive improvement as numbers of applications were getting released each day. OS Lion was the first-ever Macintosh operating system that supported the Mac App Store. Great security tools are added to protect the user’s privacy while attractive design was also added. With improved stability, compatibility and security has become the main focus. The operating system was easily navigable. This time the process of installation was way simple. From start-up till the shut down each and every expectation has been changed. Mac OS X Lion was released with numerous changes in all areas like interface, framework… The changes can be observed from the installation screen, to navigation and settings. Unlike snow leopard who was released in the past with absolutely no changes.

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