具体步骤如下：
1.复制ubuntu9.04光盘镜像文件到C盘根目录
2.复制镜像文件中casper目录下的initrd.gz和vmlinuz到C盘根目录
3.下载grub4dos，解压其中的grldr、grldr.mbr、grub.exe到C盘根目录
4.新建memu.lst文件内容如下：
代码:
代码： 全选
title Install Ubuntu 9.04
root (hd0,0)
kernel (hd0,0)/vmlinuz boot=casper iso-scan/filename=/ubuntu-9.04-desktop-i386.iso ro quiet splash locale=zh_CN.UTF-8
initrd /initrd.gz
boot代码： 全选
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect
c:\grldr.mbr="grub"＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
问题是：现在 重启后只有下列三项而没有windows启动项。
只有
ubuntu9.04, kernel 2.6.28-11-generic
ubuntu9.04, kernel 2.6.28-11-generic (recovery mode)
ubuntu9.04, memtest86+
只有经GRUB选择界面选择命令行方式通过如下命令启动windows：
GRUB>root (hd0,0)
GRUB>chainloader +1
GRUB>boot
才能进windows。 再重启又没windows了
这是我现在的menu.lst
代码： 全选
# 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 3
## 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
#
#
#
# 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=2e7276aa-8bc6-4db5-89e1-ab5d705b45de ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=2e7276aa-8bc6-4db5-89e1-ab5d705b45de
## 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 ##
[b]tille Windows 7
root (hd0,0)
savedefault
makeactive
chainloader +1[/b] 这几行粗体字是我根据论坛上的方法加的，可没效果
title Ubuntu 9.04, kernel 2.6.28-11-generic
uuid 2e7276aa-8bc6-4db5-89e1-ab5d705b45de
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=2e7276aa-8bc6-4db5-89e1-ab5d705b45de ro 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 2e7276aa-8bc6-4db5-89e1-ab5d705b45de
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=2e7276aa-8bc6-4db5-89e1-ab5d705b45de ro single
initrd /boot/initrd.img-2.6.28-11-generic
title Ubuntu 9.04, memtest86+
uuid 2e7276aa-8bc6-4db5-89e1-ab5d705b45de
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
sudo fdisk -l
Disk /dev/sda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xd0b1d0b1
Device Boot Start End Blocks Id System 是60G的盘
/dev/sda1 * 1 2432 19535008+ 7 HPFS/NTFS 我记得在安装时看的，这里好像是Win7 的C盘 18.6G
/dev/sda2 2433 7296 39070080 5 Extended 这里是什么不知道，之前好像没的
/dev/sda5 2433 4615 17533665+ 7 HPFS/NTFS 这里是我的D盘 16.7G
/dev/sda6 4615 6149 12323074 7 HPFS/NTFS 这里是我的E盘 11.8G
/dev/sda7 6150 6212 506016 82 Linux swap / Solaris 518MB的交换空间
/dev/sda8 6213 7296 8707198+ 83 Linux ext4的ubuntu主空间
装ubuntu的空间原来是8.8G的F盘
问题如上,还请大家帮忙解决 我还是个小白 
