问题描述：

Ubuntu 10.04发布了，随即裸机安装了Windows XP ，然后用U盘启动盘安装了Ubuntu 10.04,安装速度飞快(不到10分钟吧)，但是装上后发现在grub启动项里没有XP，郁闷了，花了几分钟终于解决了，呵呵~

以下是修改后的grub.cfg, 依照个人分区情况不同进行修改~~

进入Ubuntu10.04，在终端中键入以下命令，

sudo gedit /boot/grub.cfg

对比以下修改相应的XP启动项，保存退出，然后就OK了!

---------------------------------以下为grub.cfg的内容：-------------------------------

#

# DO NOT EDIT THIS FILE

#

# It is automatically generated by /usr/sbin/grub-mkconfig using templates

# from /etc/grub.d and settings from /etc/default/grub

#

### BEGIN /etc/grub.d/00_header ###

if [ -s $prefix/grubenv ]; then

load_env

fi

##如果要开机默认启动项为XP，那么这里set default改为XP启动序号，比如这里为4，即：set default="4"

set default="0"

if [ ${prev_saved_entry} ]; then

set saved_entry=${prev_saved_entry}

save_env saved_entry

set prev_saved_entry=

save_env prev_saved_entry

set boot_once=true

fi

function savedefault {

if [ -z ${boot_once} ]; then

saved_entry=${chosen}

save_env saved_entry

fi

}

function recordfail {

set recordfail=1

if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi

}

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

if loadfont /usr/share/grub/unicode.pf2 ; then

set gfxmode=640x480

insmod gfxterm

insmod vbe

if terminal_output gfxterm ; then true ; else

# For backward compatibility with versions of terminal.mod that don't

# understand terminal_output

terminal gfxterm

fi

fi

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

set locale_dir=($root)/boot/grub/locale

set lang=zh

insmod gettext

if [ ${recordfail} = 1 ]; then

set timeout=-1

else

set timeout=10

fi

### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###

set menu_color_normal=white/black

set menu_color_highlight=black/light-gray

### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###

menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {

recordfail

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

linux    /boot/vmlinuz-2.6.32-21-generic root=UUID=27cc65d6-0513-4f68-8c42-901f871052ae ro   quiet splash

initrd    /boot/initrd.img-2.6.32-21-generic

}

menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {

recordfail

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

echo    'Loading Linux 2.6.32-21-generic ...'

linux    /boot/vmlinuz-2.6.32-21-generic root=UUID=27cc65d6-0513-4f68-8c42-901f871052ae ro single

echo    'Loading initial ramdisk ...'

initrd    /boot/initrd.img-2.6.32-21-generic

}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###

menuentry "Memory test (memtest86+)" {

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

linux16    /boot/memtest86+.bin

}

menuentry "Memory test (memtest86+, serial console 115200)" {

insmod ext2

set root='(hd0,8)'

search --no-floppy --fs-uuid --set 27cc65d6-0513-4f68-8c42-901f871052ae

linux16    /boot/memtest86+.bin console=ttyS0,115200n8

}

### END /etc/grub.d/20_memtest86+ ###

##这里加入XP启动项参数↓

### BEGIN /etc/grub.d/30_os-prober ###

menuentry "Windows XP (on /dev/sda1)" {

insmod ntfs

set root=(hd0,1)

search --no-floppy --fs-uuid --set B2CC3F5FCC3F1CD3  ##刚才抄下的UUID放这里!

chainloader +1

}

### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###

# This file provides an easy way to add custom menu entries.  Simply type the

# menu entries you want to add after this comment.  Be careful not to change

# the 'exec tail' line above.

### END /etc/grub.d/40_custom ###