Ubuntu yindaoxiufu 引导修复（Boot Repair)

Ubuntu yindaoxiufu 引导修复（Boot Repair)  

from: http://blog.csdn.net/piaocoder/article/details/50589667

1. sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update

2. sudo apt-get install -y boot-repair && boot-repair

3. Then, you can see the followings window:

==>> Recommended repair

Do as the windows asked.

4. Sometimes, you may also enount errors as follows:

well, just reboot and try to use USB to repair this time.