Ubuntu 10.04 Grub一时冲动没忍住，于是就升了，接着就碰到魔鬼了：重启后在grub那步出错，过不去了，提示 “GRUB loading error: the symbol ‘grub_puts_’ not found”，光标就停在Ubuntu 10.04 Grub rescue>后面，google找了一些文章，发现国内的几个都大同小异，后面有一些步骤根本没有交代清除，做到一半就进行不下去了，后来找到一个老外的帖子, 一步一步都很清楚，照着做下来，成功地把Ubuntu 10.04 Grub修复了。
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
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
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.
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
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/vesslan1029/archive/2010/05/06/5562298.aspx
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