(Beta 10A190) Mac OS 10.6 Snow Leopard PowerPC
What is (Beta 10A190) Mac OS 10.6 Snow Leopard PowerPC?
Back in the late transition days from PPC to Intel Apple had to eventually cut the rope for PPC. When early reports of developer beta builds of Snow Leopard surfaced, Apple neither clarified nor commented on the further PPC support of OS X beyond Leopard. But when the golden master was handed out it was clear — and communicated by then — that support for PPC was finally dropped. Things rested for years at that point (at least to my knowledge; Apple engineers knew better for sure). Then, mid-March 2020 I was hinted to a tweet by tesco@system2048 who posted a screenshot of a working SL-PPC
This information sourced from this MacRumors thread: https://forums.macrumors.com/threads/snow-leopard-on-unsupported-ppc-machines.2232031/
The easy way:
Below, the file PPC_SL_10A190.dmg is a bootable disk image of a system just after successful installation. Simply restore this image to a disk or partition using Disk Utility, and you can boot into the first time setup of a working Snow Leopard PPC install.
Note that you will need to select "erase destination" when doing the restore from the DMG file to ensure that the image is properly bootable. For more information, watch the 6 minute video walkthrough of the process above.
The advanced way:
Obviously, a PowerPC machine is pre-requisite. A copy of a developer build of 10.6 (server or client) will be needed, in addition to a handful of original kernel extensions from 10.5.8, a USB drive (or even better, a firewire hard disk), and a helper system in form of a Mac capable of running 10.6 out-of-the box (e.g., MacBook 1,1 to 4,1, etc.).
Generally, G4 and G5 machines capable of booting from external USB or Firewire drives should be able to install 10.6
Initial patches to set up working installer media
This shell script will patch the installer to boot properly: https://github.com/julian-fairfax/osx-sl-patcher
Download (Beta 10A190) Mac OS 10.6 Snow Leopard PowerPC for Mac
(7533.72 MiB / 7899.68 MB)
/ ISO image
(3254.47 MiB / 3412.56 MB)
Bootable DMG image of an installed system / DMG image
Emulating this? It could probably run under: QEMU