http://www.google.co.kr/url?sa=t&source=web&cd=1&ved=0CDQQFjAA&url=http%3A%2F%2Fpagecache-tools.googlecode.com%2Fsvn%2Ftrunk%2Fdoc%2Fboot_linux_faster%2Fboot_linux_faster.pdf&rct=j&q=fastboot%20preload&ei=EDKNTruDBqWemQWz1oQs&usg=AFQjCNGAoCmrdoudInnjms2wPnrcEwkU6A&cad=rja
트릭이 참 많다. preload cache 쪽을 특히 주의깊게 살펴보자.