http://www.linuxsir.org/bbs/thread336103.html
http://www.ibm.com/developerworks/cn/linux/l-k26initrd/
http://www.linuxeden.com/forum/thread-160356-1-8.html
http://blog.chinaunix.net/u1/34474/showart_485837.html
http://www.cnblogs.com/alwaysmylady/archive/2009/04/03/1429039.html
http://www.builder.com.cn/2008/0626/950893.shtml
http://www.linuxsir.org/bbs/thread353115.html
http://www.ibm.com/developerworks/cn/linux/l-initrd.html