OS X Mavericks

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OS X 10.9 "Mavericks" is the tenth major release of Mac OS X. It was announced at June 10, 2013, at WWDC 2013. The RTM was released on October 22, 2013 and it boasts several changes over the original OS X releases.

System Requirements

OS X Mavericks can run on most Macs that can run OS X Mountain Lion; as with Mountain Lion, 2 GB of RAM, 8 GB of available storage, and OS X 10.6.8 (Snow Leopard) or later are required. Mavericks is free to upgrade and all later versions are free.

The full list of compatible models:

  • iMac (Intel-based)#Aluminum iMac|iMac]] (Mid-2007 or later)
  • MacBook (13-inch Aluminum, Late 2008), (13-inch Polycarbonate, Early 2009 or later)
  • MacBook Pro (13-inch, Mid-2009 or later), (15-inch or 17-inch, Mid/Late 2007 or later)
  • MacBook Air (Late 2008 or later)
  • Mac Mini (Early 2009 or later)
  • Mac Pro (Early 2008 or later)
  • Xserve (Early 2009)


Mavericks made Apple history for two distinct reasons: 1) For the first time, OS X was released to all qualifying Mac users free of charge as a system upgrade on the Mac App Store, and 2) Mavericks is the first release that stopped using feline codenames and switched to California-based titles, thus making it the start of a new generation or line of OS X. Mavericks also did not change system requirements significantly (if at all) from Mountain Lion.

While aestetically the same as 10.8 "Mountain Lion" (the previous release), 10.9 introduced memory compression, improved paging, and new energy management features, along with Time Coalescing. Also, OS X Mavericks is the first version of OS X to boot with checking kernel extension signatures, denying load to kernel extensions that are not properly signed.


Version Build Date OS name Notes Standalone download
10.9 13A603 (GM2) October 22, 2013 Darwin 13.0 Original Mac App Store release
10.9.1 13B42 December 16, 2013 Darwin 13.0 About the OS X Mavericks v10.9.1 Update OS X Mavericks 10.9.1 Individual update
10.9.2 13C64 February 25, 2014 Darwin 13.1 About the OS X Mavericks v10.9.2 Update OS X Mavericks 10.9.2 Individual update

OS X Mavericks 10.9.2 Combo update

10.9.3 13D65 May 15, 2014 Darwin 13.2 About the OS X Mavericks v10.9.3 Update OS X Mavericks 10.9.3 Individual update

OS X Mavericks 10.9.3 Combo update

10.9.4 13E28 June 30, 2014 Darwin 13.3.0 About the OS X Mavericks v10.9.4 Update OS X Mavericks 10.9.4 Individual update

OS X Mavericks 10.9.4 Combo update

10.9.5 13F34 September 17, 2014 Darwin 13.4.0 About the OS X Mavericks v10.9.5 Update OS X Mavericks 10.9.5 Individual update

OS X Mavericks 10.9.5 Combo update

13F1066 March 9, 2015 Security Update 2015-002 Mavericks
13F1077 April 8, 2015 Security Update 2015-004 Mavericks
13F1096 June 30, 2015 Security Update 2015-005 Mavericks
13F1112 August 13, 2015 Security Update 2015-006 Mavericks