1，我在hd1,0安装XP
2，在hd0,0安装2003
3，在hd0,7安装VISTA。
如果用得着，bootsect /nt60 SYS 命名可修复VISTA启动菜单。
4，为了实现硬盘安装，我在hd1,0的MBR安装GRUB4DOS。
复制hd1,0/grldr和menu.lst到hd0,0/,在hd0,0的boot.ini中加入
c:\grldr="VistaLoader-c-grldr"
menu.lst:
title Earlier Version of Windows
#查找WINDOWS XP/2003
find --set-root /ntldr
chainloader /ntldr
title Windows Vista(default)
#查找 Vista bootmgr
fallback 4
find --set-root /bootmgr
chainloader /bootmgr
3，安装LINUX。
我换hd0,0为启动硬盘，装的是UBUNTU ,官方网站上有硬盘安装的方法和启动文件下载。编辑grub的menu.lst文件，加入：
title Ubuntu7 Linux
＃引导Ubuntu
kernel (hd0,7)/feisty/vmlinuz boot=gnix_oag ramdisk_size=512000 quiet splash root=/dev/ram rw debian-installer/locale=zh_CN fd_dir=feisty
initrd (hd0,7)/feisty/initrd.gz
我遇到busybox提示can't access tty,job control，解决办法：http://forum.ubuntu.org.cn/about52574.html
安装LINUX会覆盖GRUB。我在安装ubuntu前，换了一个启动硬盘，所以2个grub是安装在2块硬盘上的。并且ubuntu自动为我建立了以前的vista和xp,2003启动项，太爽了。
menu.lst:
title Ubuntu, kernel 2.6.20-15-generic
root (hd0,9)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=d95a4375-f8ae-4a2d-bde5-dced086bb56e ro quiet splash
initrd /boot/initrd.img-2.6.20-15-generic
quiet
savedefault
title Ubuntu, kernel 2.6.20-15-generic (recovery mode)
root (hd0,9)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=d95a4375-f8ae-4a2d-bde5-dced086bb56e ro single
initrd /boot/initrd.img-2.6.20-15-generic
title Ubuntu, memtest86+
root (hd0,9)
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
# This is a divider, added to separate the menu items below from the Debian
# ones.
title Other operating systems:
root
# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title Windows NT/2000/XP (loader)
root (hd0,0)
savedefault
makeactive
chainloader +1
# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sdb1
title Windows Vista/Longhorn (loader)
root (hd1,0)
savedefault
makeactive
map (hd0) (hd1)
map (hd1) (hd0)
chainloader +1
