先装好XP，再装BSD...(BSD要装在主分区上)
然后在BSD下安装grub....安装过程省略
新建menu.lst 写入以下内容
default=0
timeout=30
splashimage (hd0,1,a)/boot/grub/huatuwang.xpm.gz
title windows xp
root (hd0,0)
makeactive
chainloader +1
title FreeBSD 6.2
root (hd0,1,a)
kernel /boot/loader
