OSX Tiger on Intel x86

É oficial, funciona na perfeição. Algumas dicas:

Alteração da resolução gráfica do boot, browse to:

/Library/Preferences/SystemConfiguration/com.apple.Boot.plist
and open it up in your text editor

You can add some switches in here to make your life a little bit sweeter...

To automatically use a certain graphics mode

<key>Graphics Mode</key>
<string>1280x1024x32@85</string>

Via Celso's