Ubuntu 10.04 Grub2的修复步骤是什么

Ubuntu 10.04 Grub2的修复步骤是什么，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

Ubuntu 10.04 LTS终于发布了，原来打算过一阵子再把9.10升一下的，但今天在update manager里，看到已经有提示说可以直接升到10.04，一时冲动没忍住，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grub rescue>后面，google找了一些文章，发现国内的几个都大同小异，Ubuntu 10.04 Grub2修复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grub2修复了。

Ubuntu 10.04 Grub2修复详细步骤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修复详细步骤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修复详细步骤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修复详细步骤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.

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