CORRECT STEPS FOR MACDADDYX ON G4 PPC MAC
It was one of these 2008 DPs.Įver since, the PowerPC Mac community have been learning all we can about the UB components in Snow Leopard - advantages, performance advances over Leopard, and areas where collective work will bring PowerPC Macs a big step beyond Leopard. In March 2020, read a tweet by who posted a screenshot of Snow Leopard running on a PowerPC Mac. Knowledge that Snow Leopard’s earliest DPs could be used on PowerPC Macs was broadly forgotten.
CORRECT STEPS FOR MACDADDYX ON G4 PPC CODE
By then, most of Snow Leopard’s code base was Intel-only, but a handful of residual, “tri-architecture” components lingered. Internally, Apple may have maintained a UB fork as a plan B contingency.Īfter many more DPs, an OS X 10.6.0 “Golden Master” shipped August 2009. Although a “tri-architecture” kernel could boot on PowerPC Macs (namely, during startup “beneath” the grey Apple and loading wheel), it could not launch Finder. By Build 10A222 ( Darwin 10.0.0d3), December 2008, an all-new Finder, the first written wholly in Cocoa, was re-worked for Intel CPUs only. Though still PowerPC-bootable, 10A190 revealed just how much UB code, relative to 10A96, was gone and how less supported PowerPCs had become. Nevertheless, a second DP in October 2008, known as Build 10A190 ( Darwin 10.0.0d2), included UB code to run on PowerPC Macs and, like 10A96, a mach kernel compiled for three architectures - Intel 32-bit, Intel 64-bit, and PowerPC. The following week, Apple clarified Snow Leopard would be Intel only.
At an early stage in Snow Leopard’s development, continued OS X support for PowerPC Macs was still on the table. Apple withheld comment on the UB nature of this DP, designated Build 10A96 (with a Darwin 10.0.0d1 kernel). When Apple supplied a first Developer Preview (DP) of OS X 10.6 Snow Leopard at WWDC in June 2008, its operating code prioritized Intel hardware but included a working kernel, Finder, and Universal Binary (UB) code for PowerPC Macs. OS X 10.5 Leopard, on sale October 2007, would be the last major version retailed for PowerPC Macs. During Apple’s product transition from PowerPC to Intel Macs, OS X supported both architectures, but a phase-out of PowerPC support neared.
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