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Help! How to Install OS X Leopard

Hi Can anyone please help me. Every time I put the disk of OS X Leopard this error always shows up.
I have already tried to format the HDD and the error still occurs.

Mac G5

3GB of Ram

1.8 Ghz

Any suggestions on how I can install the OS on the G5 unit?

Screen Shot 2020-05-23 at 2.55.08 AM.png

 
That looks like Snow Leopard 10.6 if I am not mistaken, which won't run on a PowerPC G5, You'll need a Leopard 10.5 disk.

 
I'm guessing you may be trying to install from the installer disk for another computer, maybe a PowerMac G5 or a Mac Mini or something.  You're going to want a retail Leopard disk.  I understand there are ways of modifying an image of your disk to allow it to install but it's easier to just get the retail disk. 

 
That disk is for intel based systems, your going to need to find one for the G5 explicitly or a PowerBook G4 / Mac Mini G4 Disc

 
If you have a dvd burner, you can download a disk image from Macintosh Garden and burn a copy.  They have images of the retail disk and might have an image of the original disk for your iMac/PowerMac G5.

 
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