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A developer writing under the name Rairii reports that classic Mac OS 7.6 and 9.2.2 have reached the desktop on Nintendo Wii hardware. The project remains unfinished and is not ready for public release; the report describes early boot and memory-mapping work, not a completed user-ready port.
Developer Rairii says classic Mac OS has reached the desktop on a Nintendo Wii, a milestone in a project adapting the vintage PowerPC operating system to Nintendo hardware. The report shows Mac OS 7.6 and Mac OS 9.2.2 booting, but the author says the work is not close to ready for public release.
In a guest post published by Virtually Fun on October 29, 2026, Rairii described reaching the desktop for the first time with the port. The project targets systems built around Nintendo’s ArtX-derived chipsets, including the GameCube and Wii, with Wii U support also a longer-term target. The author says the work began on June 22, 2025, when they forked OpenBIOS.
The report focuses on getting the operating system through its early startup process. New World versions of classic Mac OS use a bootloader called the Trampoline, which expects an Open Firmware environment. Rairii adapted OpenBIOS and reused some drivers from a separate Wii-focused project, while changing an existing firmware loader to handle a big-endian ELF file.
Early testing used storage devices connected through the consoles’ EXI bus, including an SD-card adapter and an IDE device. The author also described patching the Trampoline and kernel to account for differences in physical memory layout and memory-mapped hardware. These are technical milestones reported by the developer; the post does not establish that the port is stable, fully functional, or tested across every target console.
A New Use for Wii Hardware
The milestone links two distinct computing histories: Apple’s classic PowerPC-era operating system and Nintendo consoles built around PowerPC-family processors. For retrocomputing enthusiasts, reaching a desktop is a visible sign that the system has moved beyond basic boot experiments, even though it does not by itself show that applications or peripherals work reliably.
The technical work also illustrates why sharing a processor family is not enough to make software portable. The Trampoline’s assumptions about address ranges, RAM, and device mappings did not match the Nintendo systems, according to Rairii. Adapting these low-level pieces may offer a route to running old software on unusual hardware, but the report offers no performance results or account of practical use.
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From OpenBIOS to the Desktop
Rairii says the project grew out of earlier work porting Windows NT to PowerPC systems, including Nintendo hardware and PowerPC Mac laptops. That work led the developer to explore classic Mac OS and to reuse experience across ports. The stated motivation is personal interest and learning, rather than a commercial release.
The author credits Goldfish64’s separate effort to port Mac OS X to the Wii for an OpenBIOS port and some drivers that could help with this project. Rairii says they did not use that port directly because they wanted to target the GameCube as well as the Wii and Wii U. The report says the Mac OS ROM file was initially placed on a FAT filesystem for boot testing; it does not describe a finalized installation format.
Rairii also says the work was done without coding agents or large language models. That is the author’s account of the development process, not an independently verified assessment.
Stability and Release Remain Unknown
The report does not specify which features work after the desktop appears, whether the system can run applications, or how reliable input, audio, networking, and graphics are. It also does not provide performance measurements or a compatibility list for different console revisions. Rairii explicitly says the project is not ready for public release, and gives no release date or distribution plan.
Some testing described in the post uses an inaccurate EXI-IDE driver in an emulator setup, according to the author. That limits what can be inferred about compatibility with real storage hardware. The report also mentions possible future changes to memory mapping, including considerations specific to the Wii U, so the implementation remains in development.
Further Porting Work Ahead
Rairii says the project still needs work after the first desktop milestone. The post discusses resolving hardware-specific startup assumptions and leaves open whether the memory mapping will change, particularly for Wii U support. No formal schedule, next test milestone, or public release commitment is given.
Readers should look for further updates from the developer or Virtually Fun for details on application support, real-hardware testing, and whether the project expands from Wii testing to the GameCube and Wii U. Until those details are reported, the confirmed development is a developer-reported desktop boot, not a finished Mac experience for Nintendo consoles.
Key Questions
Which versions of classic Mac OS are shown running?
Rairii’s report identifies Mac OS 7.6 and Mac OS 9.2.2 as having booted to the desktop on the Wii.
Is the port available to download?
No public release is announced. Rairii says the project is nowhere near ready for public release.
Does the project target only the Wii?
No. The developer describes plans for GameCube, Wii, and eventually Wii U, though the report does not confirm completed support for all three.
What has the developer confirmed beyond reaching the desktop?
The post describes adapting OpenBIOS, working with the Mac OS Trampoline bootloader, and patching assumptions about memory and hardware mappings. It does not establish that applications or all console peripherals work.
Source: virtuallyfun.com
