how to get my grub boot menu?

blueprint

now I can restart winxp and fedora,but my grub boot menu disappear.could you tell me the way to get it?thanks!
don't be able to use chinese with mozilla,it's very bad.

loveccy

没有菜单却能进windows和fedora，那是怎么选择进去的啊
能进linux就好说了，用grub的命令重写mbr就行了。惭愧啊，好长时间没用过了，我忘了那些命令是什么了，你看看man吧，呵呵。