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For doing that kind of unsupported thing, I found it would be better to download a pirated DVD with the anti user crap removed. Even if it is legal to install it, it will be crippled. Professional pirates make sure to remove the barriers so it works fluently. It's dangerous because there are some bad pirated that add even worse stuff in there but if you take the DVD from a pirate with a good reputation, it would work better than the original DVD sold by Apple.
Don't do it, it is illegal. If you did it your computer would work better but that would not legal. Edited 2011-12-01 07:36 UTC