Upgrade to OS X 10.5 from OS X 10.4.11

[jbarley]

hi there, just wanna know what's the difference between the black and grey leopard installer dvd? thanks..

Black is a retail version, will install on any system with supported hardware.
Grey disks are system-model specific, the ones that come packaged with a new computer, and will only work for that computer or another identical system.

 

[CrashedFinder]

HELP!!! I need to update to leopard, currently running lion, here's my CPU info. Machine Name: iMac G5
Machine Model: PowerMac12,1
CPU Type: PowerPC G5 (3.1)
Number Of CPUs: 1
CPU Speed: 2.1 GHz
L2 Cache (per CPU): 512 KB
Memory: 2.5 GB
Bus Speed: 700 MHz

 

[SGilbert]

You cannot be running Lion (10.7), your Mac has a PPC chip. Look at eBay for a retail Leopard (10.5) install disk. Did you mean you are running Panther? (10.4)

 

[DeltaMac]

I'm guessing you meant to say " I need to update to Lion, currently running Leopard" ?

And, the answer is: Sorry, you have to replace your iMac G5 with something newer, as it's not possible to upgrade to Lion on your G5 processor.
Leopard is the newest OS X version that you can run on your iMac G5.
If you want to run something newer, then you will need a newer Mac.

You will need to replace that with a Mac which has at least a Core 2 Duo Intel processor.