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Snow Leopard for PowerPC G5

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Year released:

Guides on emulating older applications

Development Underway - Stage 1 [ 4.19.21 ]


[ DL #1 ] Current development build of Snow Leopard for Late 2005 G5 machines.

[ DL #2 ] Current accumulated development resources for Snow Leopard for PowerPC.

Development Timeline

Stage 1

I. Determine properties of 10A96 (apps, graphics, stability, features, frameworks, hardware / software support) on Late 2005 G5-based machines booted into normal + safe mode.

II. Determine properties of 10A190 on Late 2005 G5-based machines booted into normal + safe mode.

III. List comprehensive description of properties of each build, consisting of GPU acceleration support, popular app compatibility, stability under load and over time, functioning OS features, and kext / framework differences. Based off of this information, draw a conclusion for the final base version to build from.

Stage 2

I. Compare PowerPC-compatible kext and framework versions between selected base build, selected companion build based off of newer development version (ex. 10A190), 10.5.8, and potentially 10.6.8, wherever applicable (if at all). Document discovered information into MacRumors parent wikipost.

II. Modify base build's Kexts and Frameworks folders into hybrids comprising entirely of the newest PowerPC-compatible kexts and frameworks sourced from companion build, 10.5.8, and 10.6.8. Splice newest versions into base build; verify and document results.

III. Compare PowerPC-compatible application versions between base build, companion build, and 10.5.8. Splice newest versions into base build; verify and document results.

IV. Verify current base build GPU acceleration support, popular app compatibility, stability under load and over time, and functioning OS features.

V. Package a compact DMG of the completed build with accompanying documentation detailing currently supported machines, GPUs, compatible applications, and working features. Release to this page on Macintosh Garden.

Stage 3

I. Begin porting process of established build to 2003 - 2005 AGP-based G5 machines, and then 2003 - 2005 G4 machines afterward (this offers out-of-box machine optimization through a modular approach to environment distribution).


"Rome wasn't built in a day."


Architecture: PPC

2021 Target Platforms:

Power Mac G5 (Late 2005)
iMac G5 (Late 2005)


OpenSourceMac's picture
by OpenSourceMac - 2020, December 29 - 12:55am

Would also be cool (if possible) to make backports of certain Leopard features like Quicklook to Tiger.

rbshep's picture
by rbshep - 2020, September 30 - 3:09am

I'd love to see this come to fruition. And if some bright spark eventually manages to work out how to port Classic to Leopard, and then to Snow Leopard - It would almost be as it Apple stuck with PPC and didn't drop backwards compatibility Wink

I know such decisions, made a couple of years before iThings became everything and the Mac was reduced to merely being a dev platform, annoyed the hell out of me. It'd be great to have an alternative universe where this didn't happen, but this would be the next best thing Laughing out loud

cbone's picture
by cbone - 2020, September 29 - 4:54am

A most noble effort Smile this project could potentially bring SL's newer resources to many PPC Macs forgotten by Apple!

MikeTomTom's picture
by MikeTomTom - 2020, September 28 - 2:20am

Oh, I see. Yours is an on-going project page (there was very little page content when I asked). That other page was created earlier this year and hasn't been added to since. I guess there could be other alpha dmg's that could be added to it? But otherwise, I know as little of it's intentions than it is what it is.

z970's picture
by z970 - 2020, September 28 - 1:35am

Hmm... That may depend on its intended purpose. Is the page over there intended to be a simplified coordination hub for the project as a whole (the MacRumors thread is most likely best off as an effective "master" resource), or is it supposed to just be a download location for the provided DMG and / or other DMGs?

Given its title and description, I am currently inclined to believe it's the latter. However, my synopsis may be mistaken yet.

MikeTomTom's picture
by MikeTomTom - 2020, September 28 - 12:33am

There is a page for Snow Leopard PPC here. Is this going to be something different?
One of the screenshots on this page is the same as one on the other SL PPC page.