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Author Topic: How to install MacOS9 on unsupported iMac G4 using FW  (Read 136 times)

R6mile

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How to install MacOS9 on unsupported iMac G4 using FW
« on: November 22, 2025, 07:54:03 AM »

Hello, first time poster here!

I have tried lots of different combinations but cannot seem to find a way to install MacOS 9 Lives on my unsupported iMac G4 15 inch 1GHz (USB2). I don't have any blank CDs so am using a Lacie FW drive that I have used for lots of bootable OSX installations.

Can anyone tell me what I am doing wrong?

- I downloaded the Unsupported G4 Mac OS 9 Lives install from the Macintosh Repository
- Using Disk Utility in OSX 10.4 Tiger, I then partitioned the Lacie drive using Apple Partition Map, ensuring to tick the OS 9 drivers option.
- I then used the "restore function" in Disk Utility to restore the ISO file to the FW drive, ticking "erase destination".
- I then restart the iMac, and at the boot picker I see the "MacOS9Lives" drive, but when I boot into it after a few seconds I am greeted with the Classic-style flashing question mark on floppy disk icon.

(I have also tried restoring the IMG file inside the ISO, instead of the ISO itself, but get the same result)

Many thanks for any help!
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davecom

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Re: How to install MacOS9 on unsupported iMac G4 using FW
« Reply #1 on: Today at 06:02:45 AM »

If you're having so much trouble with booting off of your Firewire drive, wouldn't it make sense to just buy a blank CD? I'm not saying you couldn't get the Firewire setup to work (so maybe you find my post unhelpful), but blank CDs are about 20 cents in the United States when bought in bulk. I don't know where you're posting from but surely they're not much more than that anywhere else... Maybe you could save yourself a lot of time and headache by just biting the bullet.
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Purchase a refurbished Mac mini G4 with an SSD and Mac OS 9 pre-installed from me at https://os9.shop

aBc

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