Mac OS X: About This Mac "build" information

  • Last Modified: November 17, 2009
  • Article: HT1633
  • Old Article: 106176

Summary

Learn about build versions, such as "Build 10B504", which appear in the About This Mac window and System Profiler.

Products Affected

Mac OS X 10.4, Mac OS X 10.3, Mac OS X 10.2, Mac OS X 10.1, Mac OS X 10.0, Mac OS X 10.5, Mac OS X 10.6

The build version depends on the version of the Mac OS X operating system that you have installed. When you install a Mac OS X software update, you get a new build version. The original version that came with your PowerPC- or Intel-based Mac may be different than what appears below.

Mac OS X v10.6.2 Build 10C540
Mac OS X v10.6.1 Build 10B504
Mac OS X v10.6 Snow Leopard Build 10A432; build 10A433 for Server
Mac OS X v10.5.8 Build 9L30, or 9L34 for Server 10.5.8 v1.1
Mac OS X v10.5.7 Build 9J61
Mac OS X v10.5.6 Build 9G55, or 9G66 from Mac OS X 10.5.6 Install DVD
Mac OS X v10.5.5 Build 9F33
Mac OS X v10.5.4 Build 9E17, or 9E25 from Mac OS X 10.5.4 Install DVD
Mac OS X v10.5 Leopard Build 9A581
Mac OS X v10.4.11 Build 8S165
Mac OS X v10.4 Tiger Build 8A428
Mac OS X v10.3.9 Build 7W98
Mac OS X v10.3.2 (retail disc) Build 7D28
Mac OS X v10.3 Panther Build 7B85
Mac OS X v10.2.8 Build 6R65 or 6R73
Mac OS X v10.2.3 retail CD (with "10.2.3" imprinted) Build 6G37, 6G35 for Server
Mac OS X v10.2 Jaguar Build 6C115
Mac OS X v10.1.5 Build 5S60 (5S66 with Networking Update 1.0)
Mac OS X v10.1 Puma Build 5G64 (5L14 or 5L17b with Security Update 10-19-01)
Mac OS X v10.0 Cheetah Build 4K78


Notes

  1. You should always use the latest version of Mac OS X. Updates are available in the Software Update pane of System Preferences and at Apple Downloads http://www.apple.com/swupdates/.
  2. Click the word "Version" in the About This Mac window to see the build number (except in Mac OS X 10.0.x).
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