Ubuntu 10.04 Grub2修復(fù)詳細(xì)步驟
Ubuntu 10.04 LTS終于發(fā)布了，原來(lái)打算過(guò)一陣子再把9.10升一下的，但今天在update manager里，看到已經(jīng)有提示說(shuō)可以直接升到10.04，一時(shí)沖動(dòng)沒(méi)忍住，于是就升了，接著就碰到魔鬼了：重啟后在grub那步出錯(cuò)，過(guò)不去了，提示 “GRUB loading error: the symbol ‘grub_puts_’ not found”，光標(biāo)就停在grub rescue>后面，google找了一些文章，發(fā)現(xiàn)國(guó)內(nèi)的幾個(gè)都大同小異，Ubuntu 10.04 Grub2修復(fù)后面有一些步驟根本沒(méi)有交代清除，做到一半就進(jìn)行不下去了，后來(lái)找到一個(gè)老外的帖子, 一步一步都很清楚，照著做下來(lái)，成功地把grub2修復(fù)了。
Ubuntu 10.04 Grub2修復(fù)詳細(xì)步驟1
- Boot to the LiveCD Desktop (Ubuntu 9.10 or Ubuntu 10.04).
- Open a terminal – Applications, Accessories, Terminal .
- Determine your normal system partition – (the switch is a lowercase “L”) sudo fdisk -l
- If you aren’t sure, rundf -Th . Look for the correct disk size and ext3 or ext4 format.
- Mount your normal system partition:
- Substitute the correct partition: sda1, sdb5, etc.
- sudo mount /dev/sdXX /mnt # Example: sudo mount /dev/sda1 /mnt
Ubuntu 10.04 Grub2修復(fù)詳細(xì)步驟2
- Only if you have a separate boot partition :
- sdYY is the /boot partition designation (examply sdb3)
- sudo mount /dev/sdYY /mnt/boot
- Mount devices:sudo mount --bind /dev/ /mnt/dev
- To ensure that only the grub utilities from the LiveCD get executed, mount /usrsudo mount --bind /usr/ /mnt/usr
- mount proc filesystemsudo mount --bind /proc/ /mnt/proc
- Chroot into your normal system device:sudo chroot /mnt
- If there is no /boot/grub/grub.cfg or it’s not correct, create one usingupdate-grub
- Reinstall GRUB 2:
- Substitute the correct device – sda, sdb, etc. Do not specify a partition number.
- grub-install /dev/sdX
Ubuntu 10.04 Grub2修復(fù)詳細(xì)步驟3
- Verify the install (use the correct device, for example sda . Do not specify a partition): sudo grub-install --recheck /dev/sdX
- Exit chroot : CTRL-D on keyboard
- Unmount devices:sudo umount /mnt/dev
- If you mounted a separate /boot partition:sudo umount /mnt/boot
- Unmount last device:sudo umount /mnt
- Reboot.reboot
- Post-Restoration Commands
- Once the user can boot to a working system, try to determine why the system failed to boot.
- The following commands may prove useful in locating and/or fixing the problem.
Ubuntu 10.04 Grub2修復(fù)詳細(xì)步驟4
- To refresh the available devices and settings in /boot/grub/grub.cfg
- sudo update-grub
- To look for the bootloader location.
- grub-probe -t device /boot/grub
- To install GRUB 2 to the sdX partition’s MBR (sda, sdb, etc.)
- sudo grub-install /dev/sdX
- To recheck the installation. (sda, sdb, etc.) sudo grub-install --recheck /dev/sdX
- Please check the following link for further details.
https://help.ubuntu.com/community/Grub2#Reinstalling%20GRUB%202
本文來(lái)自CSDN博客，轉(zhuǎn)載請(qǐng)標(biāo)明出處：http://blog.csdn.net/vesslan1029/archive/2010/05/06/5562298.aspx
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