My computer will run on 10.5 and is currently on 10.4.11. Where can I obtain this reference release? 10.6 is beyond the spec of the machine.

I have inherited a 2005 IMAC G5 which will run on 10.5 Leopard but not 10.6 Snow Leopard. For my purposes it is still a serviceable bit of kit but it runs on 10.4.11 presently. I have upgraded the memory to 2.5GB but cannot seem to locate a copy of 10.5 anywhere. Does anyone know where I can obtain a legitimate reference upgrade from? Many thanks.

iMac, Mac OS X (10.4.11)

Posted on Apr 19, 2012 2:18 PM

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7 replies

Apr 19, 2012 2:39 PM in response to AndrewBax

Leopard requirements/10.5.x...


* Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor


minimum system requirements


* 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)

* DVD drive for installation

* 9GB of available disk space (I say 30GB at least)

Classic/OS9 Apps no longer supported.

Trouble is Apple no longer sells it, check eBay & such for the Retail version, not the Gray Discs...

http://www.ebay.com/sch/i.html?_nkw=mac+os+x+leopard+retail+10.5

Apr 20, 2012 6:10 AM in response to AndrewBax

Leopard is no longer available at the Apple Store but may be available by calling Apple Phone Sales @ 1-800-MY-APPLE (1-800-692-7753).


If you can't obtain a retail install DVD from Apple, look on eBay or Google the installer part numbers to possibly find at an on-line store. Here's what to look for:


MB427Z/A Leopard 10.5.1 install DVD

MB576Z/A Leopard 10.5.4 install DVD

MB021Z/A Leopard 10.5.6 install DVD (single user)

MB022Z/A Leopard 10.5.6 install DVD (5-user family pack)


Installing Mac OS X 10.5 Leopard

http://support.apple.com/kb/HT1544


Mac OS X 10.5 Leopard Installation and Setup Guide

http://manuals.info.apple.com/en/leopard_install-setup.pdf


After you install the base 10.5, download & install the 10.5.8 combo update at http://support.apple.com/downloads/Mac_OS_X_10_5_8_Combo_Update


The DVD should look like this

User uploaded file

Caution - Leopard does not support classic mode. So, if you currently open OS 9 apps in classic mode, you won't be able to do this if you upgrade to Leopard.


 Cheers, Tom 😉

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My computer will run on 10.5 and is currently on 10.4.11. Where can I obtain this reference release? 10.6 is beyond the spec of the machine.

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