Mac OS X 10.3.6: "Re: Anthony Burokas question: How to migrate to a new Mac without Setup Assistant. I have done this using the free utility Carbon Copy Cloner.
1. Download Carbon Copy Cloner onto the old Mac.
2. Shut down the new Mac.
3. Connect the Macs with a FireWire cable.
4. Start the new Mac in Target Disk Mode (hold down the T key)
5. On the old Mac, use disk utility to format the new Macs hard disk. (Anthony will need to copy any data he needs from the new Mac first)
6. Use Carbon Copy Cloner to clone your old Mac's hard disk onto the new Mac.
7. Disconnect and restart your new Mac.
8. Reinstall iLife and other goodies from the System Restore disk.
I have done this 5 or 6 times. One time the new Mac wouldn't start up with the OS from the old Mac. I simply used the system CD or DVD that came with the new Mac and did an Archive and Install."
Nice discussion, but this is all way harder than it ought to be. In the old Classic days sytem migration was trivial. XP, btw, can handle a similar transition by mirroring then doing a repair install. Neither solution is really satisfactory.