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Currently only available in Mac OS X 10.6 "Snow Leopard", Mac OS X 10.7 "Lion", and OS X 10.8 "Mountain Lion" Added Support to Install ISO files from USB; 5.0.5033: March 14, 2013 Support for Windows 8 and Windows 8 Pro (64-bit only) Boot Camp support for Macs with a 3 TB hard drive; Drops support for 32-bit Windows 7
Mac OS X Snow Leopard (version 10.6) (also referred to as OS X Snow Leopard [10]) is the seventh major release of macOS, Apple's desktop and server operating system for Macintosh computers. Snow Leopard was publicly unveiled on June 8, 2009 [ 11 ] at Apple’s Worldwide Developers Conference .
Older versions supported some or all of 32-bit PowerPC, 64-bit PowerPC, 32-bit x86, and 32-bit ARM. It supports the POSIX API by way of its BSD lineage (largely FreeBSD userland ), so a large number of programs written for various other UNIX-like systems can be compiled on Darwin with no changes to the source code .
Final version of macOS to support 32-bit hardware and software; macOS Catalina: June 3, 2019 October 7, 2019 Version 10.15; First version of macOS with only 64-bit hardware and software support; 32-bit hardware and software support dropped; Macintosh computers (x86 and ARM64) macOS Big Sur: June 22, 2020 November 12, 2020 Version 11; macOS ...
[50] 10.4.4 introduced Rosetta, which translated 32-bit PowerPC machine code to 32-bit x86 code, allowing applications for PowerPC to run on Intel-based Macs without modification. Only PowerPC Macs can be booted from retail copies of the Tiger client DVD, but there is a Universal DVD of Tiger Server 10.4.7 (8K1079) that can boot both PowerPC ...
XNU in Mac OS X Snow Leopard, v10.6, (Darwin version 10) comes in two varieties, a 32-bit version called K32 and a 64-bit version called K64. [9] K32 can run 64-bit applications in userland. [10] What was new in Mac OS X 10.6 was the ability to run XNU in 64-bit kernel space.
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Mac OS X 10.4 "Tiger" and Mac OS X 10.5 "Leopard" had only a 32-bit kernel, but they can run 64-bit user-mode code on 64-bit processors. Mac OS X 10.6 "Snow Leopard" had both 32- and 64-bit kernels, and, on most Macs, used the 32-bit kernel even on 64-bit processors. This allowed those Macs to support 64-bit processes while still supporting 32 ...