更新之后GRUB里面没有ubuntu了

[magic1136]

我是5.10版的
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install kde

下载安装了大约481Mb的文件

重新启动之后
原本GRUB里面的3个ubuntu 消失了2个

就剩下一个 ubuntutest86+ 什么的程序
不能进入系统

还有就是other os
windows xp



现在xp可以进入
但是ubuntu不能进入了

不知道怎样解决

[madoldman]

手工加上试试看

[eexpress]

title Ubuntu, kernel 2.6.15-21-686
root (hd0,2)
kernel /boot/vmlinuz-2.6.15-21-686 root=/dev/hda3 ro quiet splash
initrd /boot/initrd.img-2.6.15-21-686
savedefault
boot

title Ubuntu, kernel 2.6.15-21-686 (recovery mode)
root (hd0,2)
kernel /boot/vmlinuz-2.6.15-21-686 root=/dev/hda3 ro single
initrd /boot/initrd.img-2.6.15-21-686
boot

title Ubuntu, memtest86+
root (hd0,2)
kernel /boot/memtest86+.bin
boot

[magic1136]

我在grub>下面
输入
find /boot/vmlinuz
提示找不到
find /vmlinuz
也找不到

[magic1136]

很感谢楼上的两位帮助

我将windows下的分区表 贴上来

[magic1136]

我现在的grub里面显示的是
Ubuntu,memtest86+
Other operating system :
Microsoft Windows XP Professional

只有这么多

[magic1136]

如果不知道内核版本号怎么办
因为更新了。。。。

[eexpress]

版本号，grub的find可以找到。或者win下面用e2explorer，大概这个名字的软件，可以看ext分区。也可以看到。还有reiserfs的分区也有工具。肯定要找到版本号，才可以修改正常的。

[drivel]

截图看不到ubuntu分区啊

[magic1136]

第一块硬盘 最后 2个就是

小的那个是交换分区

[magic1136]

版本号，grub的find可以找到。或者win下面用e2explorer，大概这个名字的软件，可以看ext分区。也可以看到。还有reiserfs的分区也有工具。肯定要找到版本号，才可以修改正常的。

是 explore2fs

[magic1136]

我这里只有一个文件

[eexpress]

那你重新安装grub了。这样多半目录冲掉了。

[eexpress]

是explore2fs，我开始没看我的目录。你的版本似乎比我的好啊。多少版本的。哪里下的。

[magic1136]

# 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'.
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=/dev/hda3 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,2)

## 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

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

## ## End Default Options ##

title Ubuntu, memtest86+
root (hd0,2)
kernel /boot/memtest86+.bin
boot

### 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/hda1
title Microsoft Windows XP Professional
root (hd0,0)
savedefault
makeactive
chainloader +1