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我用文本编辑器打开boot\grub\menu.lst后；修改了menu.lst
保存时出现错误；
You do not have the permissions necessary to save the file.
Please check that you typed the location correctly and try again.
请问我应该这么办；我准备修改配置文件来做多重引导的？
请大侠赐教

没有权限，运行 连sudo也不知道，小心点啊，注意备份。

。。。。楼上说的对，没有用sudo。既然这样，建议楼主先对menu.lst做个备份。 然后再对menu.lst进行操作，这样失败以后进不去系统的话，还可以通过Live CD进入Ubuntu修复回来。具体的修复方法如下：
先查看Ubuntu所在分区： 然后将得到的Ubuntu分区挂载到/mnt下 然后将menu.lst.bak恢复为menu.lst 执行完成之后Umount Ubuntu的分区，然后重启即可

非常感谢

真有感玩命的。。

karlmax9527 写了：真有感玩命的。。

没关系
一个小时后就。。一个新的LINUX就延生了

学习了。

我特地来看三楼的解答，以前还担心不能进入系统呢，现在可以放开去修改了！

学习中.....................

# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 10

## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
#hiddenmenu

# Pretty colours
#color cyan/blue white/blue

## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret

#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=ba8ab832-874d-4c60-b9a0-1f93513a559e ro locale=zh_CN

## default grub root device
## e.g. groot=(hd0,0)
# groot=ba8ab832-874d-4c60-b9a0-1f93513a559e

## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash

## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery) single
# altoptions=(recovery mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all

## specify if running in Xen domU or have grub detect automatically
## update-grub will ignore non-xen kernels when running in domU and vice versa
## e.g. indomU=detect
## indomU=true
## indomU=false
# indomU=detect

## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##

title Ubuntu 9.04, kernel 2.6.28-11-generic
uuid ba8ab832-874d-4c60-b9a0-1f93513a559e
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=ba8ab832-874d-4c60-b9a0-1f93513a559e ro locale=zh_CN quiet splash
initrd /boot/initrd.img-2.6.28-11-generic
quiet

title Ubuntu 9.04, kernel 2.6.28-11-generic (recovery mode)
uuid ba8ab832-874d-4c60-b9a0-1f93513a559e
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=ba8ab832-874d-4c60-b9a0-1f93513a559e ro locale=zh_CN single
initrd /boot/initrd.img-2.6.28-11-generic

title Ubuntu 9.04, memtest86+
uuid ba8ab832-874d-4c60-b9a0-1f93513a559e
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 Microsoft Windows XP Professional
rootnoverify (hd0,0)
savedefault
makeactive
chainloader +1


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda2
title Windows Vista (loader)
rootnoverify (hd0,1)
savedefault
makeactive
chainloader +1