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How to repair MBR sectors

Source: Internet
Author: User
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How to fix MBR sectors-general Linux technology-Linux technology and application information. A. We have MBR programs in our system. We 'd better back up them. To prevent the system from being started. Next, we will teach you how to restore to the system.
In repair mode, enter shell, mount your own backup hard disk, and then use dd if =/dev/Hard Disk of =/dev/sda bs = 512 count = 1
B. If no backup is performed, the system will break down. How can I help you fix the system?
In repair mode, enter shell. Run the grub-instll/dev/sda command to fix the problem.


In this way, the system can start up.

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