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Ever wanted to install Mac OS X Tiger on an older PPC machine (that you've no doubt upgraded with a new HDD and RAM, possibly even a CPU swap!) but Tiger says that your machine is "unsupported" when you go to install it? Or you're getting a gray prohibitory sign when trying to boot your G3 with the Mac OS X 10.4 Tiger install disk? Search no longer, this is the solution!
This is a very simple mod which modifies the badMachines line of the installer distribution so that the installation will start regardless of your machine's build. The reason these machines are in this list to begin with is usually because they don't have a built-in FireWire port. I based this mod on the CD version of the Tiger installer instead of the DVD version so I could install it on my iMac G3 which still has its original CD drive. I mostly followed the guide here to build this.
I've tested this with my Tangerine iMac G3 Revision D with only 256 MB of RAM and the stock 6GB hard drive before I updated it and ran into no installation issues! Obviously your performance will vary based on the hardware in your actual device.
Mac-OS-X-v10-4-2-Tiger--Install-Disc-1_2005--CD-badMachineMOD.dmg (641.9 MiB / 673.08 MB)
Mac OS X v10.4.2 Tiger Install Disc 1, Bad Machine MOD / DMG image
* The Kanga PowerBook has never been certified for any version of OS X.
Emulating this? It should run fine under: QEMU