Mac OS X Lion

Not to be confused with OS X 10.8 Mountain Lion.
Mac OS X 10.7 Lion
A version of the Mac OS X operating system

Screenshot of Mac OS X 10.7 Lion
Developer Apple Inc.
OS family
Source model Closed, with open source components
Released to
manufacturing
July 20, 2011 (2011-07-20)
Latest release 10.7.5 (Build 11G63) / October 4, 2012 (2012-10-04)[2]
Update method Apple Software Update
Platforms x86-64
Kernel type Hybrid (XNU)
License Apple Public Source License (APSL) and Apple end-user license agreement (EULA)
Preceded by Mac OS X 10.6 Snow Leopard
Succeeded by Mac OS X 10.8 Mountain Lion
Official website Mac OS X 10.7 Lion at the Wayback Machine (archived June 9, 2012)
Support status
Unsupported as of about October 2014;[3] iTunes support ended in September 2015

Mac OS X Lion[4] (version 10.7; marketed as Mac OS X 10.7 Lion)[5] is the eighth major release of Mac OS X (now named macOS), Apple's desktop and server operating system for Macintosh computers.

A preview of Mac OS X 10.7 Lion was publicly unveiled at the "Back to the Mac" Apple Special Event on October 20, 2010. It brings many developments made in Apple's iOS, such as an easily navigable display of installed applications, to the Mac, and includes support for the Mac App Store, as introduced in Mac OS X Snow Leopard version 10.6.6.[6][7] On February 24, 2011, the first developer's preview of Lion (11A390) was released to subscribers to the Apple Developer program.[8] Other developer previews were subsequently released, with Lion Preview 4 (11A480b) being released at WWDC 2011.[9]

Lion was released to manufacturing on July 1, 2011,[10] followed by its final release via the Mac App Store on July 20, 2011. Apple reported over one million Lion sales on the first day of its release.[11] As of October 2011, Mac OS X Lion had sold over six million copies worldwide.[12]

Release and distribution

Mac OS X Lion was announced at WWDC 2011 at Moscone West.

On June 6, 2011, at the Apple Worldwide Developers Conference, it was announced that the official release for Lion would be in July 2011. The specific release date of July 20 was not confirmed until the day before, July 19, by Apple CFO, Peter Oppenheimer, as part of Apple's 2011 third-quarter earnings announcement.[13]

Apple did not initially announce any physical media distribution for Lion, such as a set of CD-ROMs or a DVD-ROM as used for past releases. Instead, the operating system was said to be available exclusively as a download from the Mac App Store for US$29.99.[14][15] The only prior version of OS X that supports the Mac App Store is Snow Leopard, which implied that any machines that support Lion currently running Tiger or Leopard would first have to be upgraded to Snow Leopard, as opposed to allowing a direct upgrade to Lion.

Apple later announced two alternative distribution mechanisms for the benefit of users without broadband Internet access: in-store downloads at retail Apple Stores, and a USB flash drive containing the OS, priced at US$69, available through the online Apple Store beginning in August.[16] On August 4, 2011, Apple started to take orders for Mac OS X Lion's USB installation flash drives for $69.99.[17]

The Server portion of Lion is available as a separate download from the Mac App Store for US$49.99, which is in addition to the purchase price of Lion itself.[18]

In July 2012, Lion was removed from the Mac App Store and retail Apple stores following the release of OS X Mountain Lion.[19] Following the removal of Lion from the Mac App Store, customers could still purchase Lion by phone at the reduced price of $20.[20] In October 2013, Lion was returned to the Apple Store website concurrently with Mountain Lion following the release of OS X Mavericks for the convenience of users who cannot run Mavericks on older Mac models.[21]

Hardware support

The first developer preview of Lion added TRIM support for Solid-state drives (SSD) shipped with Macs, which is also included in the latest version of Snow Leopard (10.6.8) shipping with current MacBook Pros before July 20, 2011. Other SSDs have built-in TRIM-like optimization, while yet others require OS patching.[22]

System requirements

New or changed features

Some new features were announced at the "Back to the Mac" keynote in October 2010, and the Apple website was updated in February 2011, with more details. Other features were announced at the WWDC 2011 keynote or on Apple's Mac OS X Lion Web site after the keynote. Apple states that there are over 250 new or changed features in Lion, including:

The complete list was on Apple's website but has since been taken down; it can now be found on the Internet Archive.[67] The developer release notes may also be of interest.[68]

Server features

Main article: Mac OS X Server

User interface changes

Dropped features

Reception

Reception for OS X Lion has been mixed; complaints include a substantial backlash by "Pro" users with workflows affected by the Autosave/Revert workflow.[88] Other highly criticized decisions include the change to "natural scrolling",[89] hiding of the scroll bar,[90] the omission of the iSync program necessary to synchronize a Mac with non-Apple mobile devices,[91] as well as abandoned functionality in Exposé[92] and Spaces.[93]

In an extensive review of the operating system, Ars Technica recommended Lion.[70] They noted that it feels like it is the start of a new line of operating systems that will continue to be influenced by Apple's iOS platform.[70] The review also compared the introduction of Lion, along with its new conventions that change traditional ways of computing, with the original Mac OS X and when it replaced the classic Mac OS.[70] Macworld called Lion a "radical revision", praising the changes made to the operating system to be more user friendly to new Mac users who are familiar with the iOS interface, while criticizing the limited utility of the interface. Ultimately, the magazine considered Lion an operating system worth getting, giving it 4.5 out of 5 stars.[94] guardian.co.uk called Lion a substantial improvement from its predecessors and considered it a "steal" given its price.[95]

On the other hand, Gizmodo stated that the new interface "feels like a failure" and concluded by saying that "it doesn't feel like a must-have upgrade".[96] Ted Landau of MacObserver also had serious criticism of Lion, reversing his earlier praise of Autosave and writing, "Auto Save takes irritatingly long when working with large documents. Still others lament the loss of the Save As… command, noting that the new Duplicate option is not as convenient to use. The consensus is that none of this would matter much — if you could disable Auto Save. If you like how it works, leave things as is. Otherwise, get rid of it. But Lion offers no way to turn Auto Save off. This is the heart of the "my way or the highway" complaint. A posting sums it up: "The new features are intrusive, non-respectful of the users' choices, and cannot be changed."[88]

Due to Lion's enhanced security features, including application sandboxing, Dino Dai Zovi, principal of security consultancy Trail of Bits and the coauthor (with Charles Miller) of The Mac Hacker's Handbook, characterized Lion's security as "a significant improvement, and the best way that I've described the level of security in Lion is that it's Windows 7, plus, plus. I generally tell Mac users that if they care about security, they should upgrade to Lion sooner rather than later, and the same goes for Windows users, too."[97]

Mac OS X Lion was criticized for removing Rosetta, which eliminated support for PowerPC applications.

Software incompatibilities

Release history

Version Build[103] Date OS name Notes Standalone download
10.7 11A511 July 20, 2011 Darwin 11.0 Original retail Mac App Store release Available from the Mac App Store
11A511s August 16, 2011 Original retail USB Thumb Drive release[104] N/A
11A2061 and 11A2063 [105] July 20, 2011 Darwin 11.0.2 For Mid 2011 Mac Mini (11A2061) and Mid 2011 MacBook Air (11A2063) Lion Internet Recovery[106] (⌘ Cmd+⌥ Opt+R upon reboot on Mid-2011 or later Macs)
10.7.1 11B26 August 16, 2011 Darwin 11.1.0 About the OS X Lion v10.7.1 Update Mac OS X v10.7.1 Update
11B2118 For the Mid 2011 Mac Mini and Mid 2011 MacBook Air Mac OS X v10.7.1 Update for MacBook Air and Mac Mini 2011
10.7.2 11C74 October 12, 2011 Darwin 11.2 About the OS X Lion v10.7.2 Update
Adds iCloud, various bug fixes, minor user interface tweaks, Safari 5.1.1, and the ability to boot into Lion Recovery from a Time Machine disk.
Mac OS X v10.7.2 Individual update (delta)

Combo update (includes 10.7.1)

10.7.3 11D50 February 1, 2012 Darwin 11.3 About the OS X Lion v10.7.3 Update
Various bug fixes, Safari 5.1.3, adds Catalan, Croatian, Greek, Hebrew, Romanian, Slovak, Thai, and Ukrainian language support.
Mac OS X v10.7.3 Individual update

Combo update (includes 10.7.1-10.7.2)

10.7.4 11E53 May 9, 2012 Darwin 11.4 About the OS X Lion v10.7.4 Update
Various bug fixes, Safari 5.1.6.
Mac OS X v10.7.4 Individual update

Combo update (includes 10.7.1-10.7.3)

10.7.5 11G56 September 19, 2012 Darwin 11.4.2 About the OS X Lion v10.7.5 Update
Various bug fixes, Safari 5.1.7, adds Gatekeeper functionality.
Mac OS X v10.7.5 Individual update

Combo update (includes 10.7.1-10.7.4)

11G63 October 4, 2012

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Preceded by
Mac OS X 10.6
Mac OS X 10.7
2011
Succeeded by
OS X 10.8
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