This section was added by DiehardBefore you read this thread, please be aware that we have bootable installation CD Images
for Mac OS 9.2.2 for both the MDD FW400 & MDD FW800 in our downloads area.
FW400: http://macos9lives.com/smforum/index.php?topic=2109.0
FW800: http://macos9lives.com/smforum/index.php?topic=2143.0
Also, be aware that you do NOT need to have OS X loaded at all, if you wish to create a Mac OS 9.2.2 only PPC.
If you wish to create a Dual boot PPC G4; simply install OS X 10.1 thru 10.4 (remember to check the "Install OS 9 drivers" when initializing the hard drive) and then extract and drag our Mac OS 9.2.2 Updated "drag Install"
http://macos9lives.com/smforum/index.php?topic=1859.0
Below is the original Post...Hello guys,
I'm making this tutorial for you guys because i myself had a very hard time to get OS 9 to work on my Powermac MDD.
So in this tutorial i will explain in depth how to get OS 9 to run on your MDD model.
Notes:
- You need a FW400 model, FW800 will not work.
- You can't use a normal Mac OS 9 CD you need a special recovery CD which i will provide a link for.
- Mac OS X 10.4 Tiger is required cause you need OS 9 Drivers to get it to boot
- I ONLY TESTED THIS WITH A SECOND HARDDRIVE so I'm not sure if this works with a second partition on one drive.
Requirements:
- Powermac G4 MDD FW400
- Mac OS X 10.4 Tiger
- Mac OS X 10.5 Leopard
- Mac OS 9 (Recovery CD)
http://macintoshgarden.org/apps/mac-os-922-powermac-g4-mddPartitioning:
So for the beginning you need to put in your OS X 10.4 Tiger CD and go to disk utility in the installer.
Now make 2 partitions on your harddrive, one for OS X and one for OS 9 (Or you can use 2 harddisks like me.)
Make the first partition "Mac OS Extended (Journaled)" and the second one "Mac OS Extended" (Read somewhere that OS 9 Will not boot on Journaled).
Installing:
So from here on you can go into 2 directions, that is go ahead and install OS X Tiger or quit this installation and put in your OS X Leopard CD in. (yes you can choose which one you want)
Now just install OS X like you would normally do and meet me at the next step.
OS 9 Preparation

:
So now that you have installed OS X Tiger or Leopard its time to get to the part you all came for.
Download the .dmg file from the link i gave you on your mac. Or download it on your pc and place it on your mac via usb.
Now that you have the .dmg file on your desktop double-click it and there comes a new file on your desktop called "OS 9 Content".
Now you open your disk utility and go to your second partition or harddrive and restore it
With as source: "OS 9 Content" and destination: "Second partition/Harddrive".
Booting:
Now you all think lets restart this Mac and hold option/alt key to select OS 9 and boot it.
This will not work for some reason so stay in your OS X Leopard/Tiger.
Go to System Preferences > Startup disk and select the OS 9 Partition/Harddrive.
From here on you are ready and now you CAN use option/alt key to select which OS you want to boot and don't have to use Startup disk anymore.
Thanks for reading guys i hope you liked it.
Feel free to correct me on my English since it is not my native language.
Sincerely,
A guy that wants to help you MDD users out.