06-02-2014, 04:01 PM
GGD wrote:
[quote=WHiiP]
The general rule of thumb is that you cannot go backwards on a machine that came with its OS. Obviously, you could buy a used machine that has OS X.6 on it, but it originally shipped with OS X.4, then YES you can go backward to OS X.4, but NOT OS X.3
One catch is that if it's an Intel Mac from 2006/2007 that shipped with 10.4, you'll need the install disks that shipped with it. The retail 10.4 disks were PowerPC only.
Yes. Those install discs crop up on eBay from time to time.
I transferred a 10.4.11 system from my G5 to my replacement Wayback Machine, a 2006 Mac Pro, by making a cloned backup of it, then cloning it back onto the drive, after it was GUID-formatted and installed in the Mac Pro, and applying the Tiger-for-Intel updates to it. It actually works in the Mac Pro. Pretty amazing, when I consider that some stuff on that particular drive probably began life in my MDD 867 in 2002.