安装双LINUX系统的问题

在有优班图的系统上又安装了红旗6.0，但回头后发现UBUNTU的启动项不见了。但优班图没有光盘修复项，重新安装还是有什么方法可以处理？？？

经过摸索， 我终于找到了一个可以解决这个问题的方法：
将ubuntu 所有磁盘根目录下/mnt/sda9/boot/的所有文件拷贝到/boot/目录下：
root@JTACT-redflag: cp -f /mnt/sda9/boot/* /boot/

打开/mnt/sda9/boot/grub/menu.lst
将： line134~145的代码

title Ubuntu 9.04
uuid 695aa407-a1f5-4f0b-a7c3-a91bf3364e3c
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=695aa407-a1f5-4f0b-a7c3-a91bf3364e3c ro quiet splash
initrd /boot/initrd.img-2.6.28-11-generic
quiet

title Ubuntu 9.04, memtest86+
uuid 695aa407-a1f5-4f0b-a7c3-a91bf3364e3c
kernel /boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

拷贝到/etc/grub.conf文件中， 并修改文件风格， 如下：
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/sda1
# initrd /boot/initrd-version.img
#boot=/dev/sda
default=0
timeout=5
gfxmenu (hd0,0)/boot/message

## ## End Default Options ##

title Ubuntu 9.04
        uuid 695aa407-a1f5-4f0b-a7c3-a91bf3364e3c
        kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=695aa407-a1f5-4f0b-a7c3-a91bf3364e3c ro quiet splash
        initrd /boot/initrd.img-2.6.28-11-generic
        quiet

title Ubuntu 9.04, memtest86+
        uuid 695aa407-a1f5-4f0b-a7c3-a91bf3364e3c
        kernel /boot/memtest86+.bin
        quiet

### END DEBIAN AUTOMAGIC KERNELS LIST
#
title Red Flag Desktop (2.6.29-Jtact)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.29-Jtact ro root=LABEL=/ vga=788 splash=silent resume=/dev/sda8
        initrd /boot/initrd-2.6.29-Jtact.img
title RedFlag (2.6.22.6-1)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.22.6-1 ro root=LABEL=/ vga=788 splash=silent resume=/dev/sda8
        initrd /boot/initrd-2.6.22.6-1.img
title Other
        rootnoverify (hd0,1)
        chainloader +1

经此处理后， 在GRUB启动时便可以正常的选择为ubuntu启动。