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Startup Disk does not see it as bootable. Holding down C gives up and ejects it. I have tried PPC version of CDs for both Lucid and Maverick.

The machine is a 867 MHz PowerPC G4 with 512 MB RAM.

I Got the ISOs here and here

Any suggestions?

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What program did you use to create the image? Could you try to do the same but with a USB-stick? – Alvar Nov 15 '11 at 21:13

Boot to OpenFirmware, then boot the CD from there.

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The link doesn't work anymore. What do you mean by "boot to open firmware"?! I don't recall seeing any such option on my iMac... – Alexis Wilke Aug 3 '13 at 3:49

I find that my G4 PPC won't boot from CDROM/DVD, in fact it's pretty fussy about reading a lot of newer optical media.

The easiest is to create a bootable USB stick. This will involve a having to boot it from the OpenFirmware prompt. There is a good guide available.

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