更改Ubuntu 8.04与Windows双系统启动顺序，让默认的Ubuntu 8.04在前的顺序到最后。
在终端下运行sudo gedit/boot/grub/menu.lst
找到下边的字段：
## ## End Default Options ##
default 4
title Ubuntu 8.04, kernel 2.6.24-16-generic
root (hd0,10)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=3968e0a6-6a1c-40f6-ad49-2de405b27740 ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-16-generic
quiet
title Ubuntu 8.04, kernel 2.6.24-16-generic (recovery mode)
root (hd0,10)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=3968e0a6-6a1c-40f6-ad49-2de405b27740 ro single
initrd /boot/initrd.img-2.6.24-16-generic
title Ubuntu 8.04, memtest86+
root (hd0,10)
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
在
title Ubuntu 8.04, kernel 2.6.24-16-generic
的上一行（你要空出一行）加入
default 4
即：
## ## End Default Options ##
default 4
title Ubuntu 8.04, kernel 2.6.24-16-generic
root (hd0,10)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=3968e0a6-6a1c-40f6-ad49-2de405b27740 ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-16-generic
quiet
title Ubuntu 8.04, kernel 2.6.24-16-generic (recovery mode)
root (hd0,10)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=3968e0a6-6a1c-40f6-ad49-2de405b27740 ro single
initrd /boot/initrd.img-2.6.24-16-generic
title Ubuntu 8.04, memtest86+
root (hd0,10)
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
default 4中的4是从进入grub中的页面中从往下数，
0 Ubuntu 8.04, kernel 2.6.24-16-generic
1 Ubuntu 8.04, kernel 2.6.24-16-generic (recovery mode)
2 Ubuntu 8.04, memtest86+
3 Other operating systems:
4 Microsoft Windows XP Professional
这个数字，自己可以改！