我先装了XP,再装了Ubuntu，怎样将系统默认启动设为XP

[itseven]

我先装了XP,再装了Ubuntu，怎样将系统默认启动设为XP？

各位大侠请帮帮忙！

[kumox]

备份/boot/grub/menu.lst
然后修改menu.lst，把XP部分放到ubuntu前面。

具体怎么操作，由于自己没有双系统，无法演示

[wangdu2002]

直接把默认的Defaout 0的0改为3就可以了。如果数字不对，看Menu.list中的XP的位置排在第几位，再把该数字减一即可。

[itseven]

# 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=531eddf2-084d-4ab4-8589-16c0a336ea0d ro

## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,8)

## 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 locale=zh_CN

## 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

## 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 8.04.2, kernel 2.6.24-23-generic
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-23-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-23-generic (recovery mode)
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-23-generic

title Ubuntu 8.04.2, kernel 2.6.24-16-generic
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-16-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-16-generic (recovery mode)
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-16-generic

title Ubuntu 8.04.2, memtest86+
root (hd0,8)
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
root (hd0,0)
savedefault
makeactive
chainloader +1


我是刚接触ubuntu的，什么都不懂
我的menu.lst里是这样的，请教怎么改？

[临水的季节]

在xp里改，电脑 属性 启动和故障恢复 设置 然后去点那个编辑
修改里面的内容，把windows的跟ubuntu互换就可以了，

[临水的季节]

对不起，发错了，不好意思

[itseven]

在XP里我看了，没有ubuntu那项，XP是先装的

[临水的季节]

没有发错，我以为发错了，刚才发的时候没有那么多英文，

[wangdu2002]

楼主留那么多旧内核有什么用呢！搜索下坛子，粘贴复制，一键干掉旧内核，然后把0改为3就可以实现你的目标了。

[itseven]

在xp里改，电脑 属性 启动和故障恢复 设置 然后去点那个编辑
修改里面的内容，把windows的跟ubuntu互换就可以了，

在XP里我试了，没有ubuntu那项....

[itseven]

楼主留那么多旧内核有什么用呢！搜索下坛子，粘贴复制，一键干掉旧内核，然后把0改为3就可以实现你的目标了。

我前几天才装上的ubuntu，什么内核等……一点都不懂

[临水的季节]

[quote="itseven"]# 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／／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊这里改，xp是6，你自己数数看

## 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=531eddf2-084d-4ab4-8589-16c0a336ea0d ro

## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,8)

## 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 locale=zh_CN

## 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

## 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 8.04.2, kernel 2.6.24-23-generic／／＊＊＊＊＊＊＊＊＊＊＊这个是0
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-23-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-23-generic (recovery mode)＃＊＊＊＊＊＊＊＊＊＊＊＊＊这个是1
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-23-generic

title Ubuntu 8.04.2, kernel 2.6.24-16-generic＃＊＊＊＊＊＊＊＊这个是2
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-16-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-16-generic (recovery mode)＃＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊这个是3
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-16-generic

title Ubuntu 8.04.2, memtest86+＃*************************这个是4
root (hd0,8)
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:＃＊＊＊＊＊＊＊＊＊＊＊＊这个是5
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title Microsoft Windows XP Professional＃＊＊＊＊这个是6
root (hd0,0)
savedefault
makeactive
chainloader +1
你自己数数title个数从0开始，

[临水的季节]

懂我意思了吗

[itseven]

# 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／／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊这里改，xp是6，你自己数数看

## 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=531eddf2-084d-4ab4-8589-16c0a336ea0d ro

## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,8)

## 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 locale=zh_CN

## 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

## 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 8.04.2, kernel 2.6.24-23-generic／／＊＊＊＊＊＊＊＊＊＊＊这个是0
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-23-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-23-generic (recovery mode)＃＊＊＊＊＊＊＊＊＊＊＊＊＊这个是1
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-23-generic

title Ubuntu 8.04.2, kernel 2.6.24-16-generic＃＊＊＊＊＊＊＊＊这个是2
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro quiet splash locale=zh_CN
initrd /boot/initrd.img-2.6.24-16-generic
quiet

title Ubuntu 8.04.2, kernel 2.6.24-16-generic (recovery mode)＃＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊这个是3
root (hd0,8)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=531eddf2-084d-4ab4-8589-16c0a336ea0d ro single
initrd /boot/initrd.img-2.6.24-16-generic

title Ubuntu 8.04.2, memtest86+＃*************************这个是4
root (hd0,8)
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:＃＊＊＊＊＊＊＊＊＊＊＊＊这个是5
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title Microsoft Windows XP Professional＃＊＊＊＊这个是6
root (hd0,0)
savedefault
makeactive
chainloader +1
你自己数数title个数从0开始，

谢谢了！

[xyf]

就是把default 0改为default n，这个n是XP所在的序号（## ## End Default Options ##
之后title的序号，从0开始计数）。