注册 登录  
 加关注
   显示下一条  |  关闭
温馨提示!由于新浪微博认证机制调整,您的新浪微博帐号绑定已过期,请重新绑定!立即重新绑定新浪微博》  |  关闭

Q超越兔子的蜗牛O--逸云沙鸥Linux

飘飘何所似,天地一沙鸥;落霞与孤鹜齐飞,秋水共长天一色~~

 
 
 

日志

 
 

ubuntu grub2 修复(用liveCD)  

2010-01-23 23:23:21|  分类: Ubuntu笔记 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

刚刚安装了Windows7 需要修复一下grub,以方便进入linux了

Recover Grub 2 via LiveCD

  • First, grab a copy of the latest Ubuntu LiveCD and boot it.

  • Open a terminal and type

$ sudo fdisk -l

  • Now, you need to remember which device listed is your linux distribution, for reference, /dev/sda1 will be used. Now we need to mount the filesystem to /mnt

$ sudo mount /dev/sda1 /mnt

  • If you have /boot on a separate partition, that need's to be mounted aswell. For reference, /dev/sda2 will be used.

$ sudo mount /dev/sda2 /mnt/boot Make sure you don't mix these up, pay attention to the output of FDISK

  • Now mount the rest of your devices

$ sudo mount --bind /dev /mnt/dev

  • Now chroot into your system

$ sudo chroot /mnt

You should be chroot'd into your system as root, you can now run commands as root, without the need for sudo.

  • Now you need to edit the /etc/default/grub file to fit your system

$ nano /etc/default/grub

  • When that is done you need to run update-grub to create the configuration file.

$ update-grub

  • To install GRUB 2 to the MBR, next you need to run grub-install /dev/sda

$ grub-install /dev/sda

  • If you encounter any errors, try grub-install --recheck /dev/sda

$ grub-install --recheck /dev/sda

  • Press Ctrl+D to exit out of the chroot.
  • Once you exit back to your regular console, undo all the mounting, first the /dev

$ sudo umount /mnt/dev

  • Now you can unmount the root system. (But if you have a separate boot partition which you mounted earlier, you have to unmount this first, or you will get a "device busy" error message.)

$ sudo umount /mnt

  • And you should be free to restart your system right into GRUB 2 and then into your system installation.

If you had alternate OS entries, update-grub might say "Cannot find list of partitions!". Ignore it and continue - once you can boot into your linux installation, do so and then rerun update-grub and grub-install /dev/sda as root.

for more:https://wiki.ubuntu.com/Grub2#Recover%20Grub%202%20via%20LiveCD 

  评论这张
 
阅读(3261)| 评论(0)
推荐 转载

历史上的今天

评论

<#--最新日志,群博日志--> <#--推荐日志--> <#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇,下一篇--> <#-- 热度 --> <#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->
 
 
 
 
 
 
 
 
 
 
 
 
 
 

页脚

网易公司版权所有 ©1997-2017