Know Your System Requirements
Not all older Macs can run Mac OS X. If you have a Mac that has been running some version of OS X just fine, then there should be no problem installing Tiger on it.
But if you are planning to put OS X on a Mac for the first time, make sure the computer fulfills these requirements:
PowerPC G3, G4, or G5 processor. If you're not sure, go to the Apple menu and choose “About This Mac.” This will display the window shown below, which tells you which processor your Mac is using.
Apple DVD drive. It's possible you can install it from a third-party external dvd drive, but Apple does not support it (meaning they won't give ...
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