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Mac OS 9.2.2 Install (for unsupported G4s like FW800 MDD G4) with (CPU 5.9, Mac ROM 10.2.1)

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[www].se [ftp].se [mirror].us
Mac_OS_9.2.2_Unsupported_G4s.iso (530.34 MB)
MD5: 7d32f6977139cce7977c6d5246afa1d3
For Mac OS 9
Guides on emulating older applications

This is the only known Mac OS 9.2.2 Install CD ISO that will Boot and Install Mac OS 9.2.2 to a PowerMac MDD G4 (FireWire 800 Model) and other OS X Only G4s.

Versions (CPU 5.9, Mac ROM 10.2.1 Modified)

It utilized the famous iMic Modified ROM (10.2.1 Modified) for OS 9.2.2
Special Thanks to iMic of Think Classic

It also utilizes the MacTron Mini OS 9.2.2 to Boot and a full Image of 9.2.2 for Restore
Special Thanks to MacTron of

It will Boot unsupported G4 systems, however, the functionality of Mac OS 9 on these systems will vary from very good to none at all depending on the system, many systems still need to be tested and results logged, so please test and let us know

Compliments of

Architecture: PPC


rbshep's picture
by rbshep - 2020, March 28 - 1:20am

Try using iPartition to flip the 'Startup' flag on the partition you installed to (or Drive Setup might be able to do it too, though this might only if that particular version was used to format the mac's internal drive). Also, don't forget to bless the system folder / system file.

I'd personally advise wiping the partition map and patch partitions completely (using dd under osx or linux), and formatting with Drive Setup 2.1 (for an internal disk) or 1.9.2 (for firewire).

Or use another tool like e.g. Silverlining 6.5.8 (downloadable from lacie site).

kalibatov's picture
by kalibatov - 2020, March 28 - 1:14am

Hi, This copy booted in my iMac G4 17inch 2003, after I restored OS 9 it did not boot from HDD Sad I`ll try different methods and post here if I succeeded.

kikyoulinux's picture
by kikyoulinux - 2016, March 10 - 3:55am

modified the model id on the OpenFirmwire shell, but the ROM was reported "checksum error"...

kikyoulinux's picture
by kikyoulinux - 2016, March 4 - 3:50am

I also have an iBook G4(12 inch, 1.07GHz), but how to hack the nvram to make the OS 9 system folder bootable?

Lgonzo99's picture
by Lgonzo99 - 2015, December 29 - 7:21pm

I can confirm that this image successfully installed OS 9.2.2 on my Power Mac Dual 1.42 Ghz G4 processor (FireWire 800). Thanks much for this image!

scott Praed's picture
by scott Praed - 2015, December 17 - 12:25am

Do you know this work on MDD 2003 with firewire 400 ? My computer is Power mac G4 1.25 Ghz mirror door 2003. On the Mac OS ROM file. It shows CPU 5.9 and Mac ROM 10.2.1 on this model.
I tested the mac os 9.2.2 Unsupported G4 on this mac.
I booted this mac.

MacOS9Lives's picture
by MacOS9Lives - 2014, December 23 - 11:41pm

Please visit: Think Classic he has additional steps to get the colors past 256 on unsupported iBook G4s

Troyd's picture
by Troyd - 2014, December 23 - 8:39am

You need to make some nvram changes in Open Firmware to make the System Folder appear as bootable on G4 iBooks, however, the Radeon 9550 in that iBook is not supported by any OS9 extension so it gets stuck very early on booting up to a grey screen. Earlier iBook G4s can boot but only to 256 colours.

MikeTomTom's picture
by MikeTomTom - 2014, December 23 - 5:02am

It cannot boot my 1.33 GHz iBook G4. The System Folder appears as "unblessed" when the CD is mounted on it. So I think this book ever booting to 9.x is out.