How to Fix the MBR in Windows 2008

Written by brian richards
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How to Fix the MBR in Windows 2008
Run bootrec.exe from the Windows Server 2008 installation disk in order to fix the master boot record. (closeup cd-rom in hand image by Terrapanthera from Fotolia.com)

Many common administrative actions, even if planned carefully, can lead to disaster for a Windows server. Repartitioning the hard disk, cloning the server, and installing driver updates each poses the threat of damaging the server's boot disk, leading to the dreaded "No operating system found" message. If you have already determined that the hard disk is health, try to fix the master boot record (MBR) of the server's hard disk by using Windows Server 2008's command line tool bootrec.exe.

Skill level:
Easy

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Things you need

  • Windows Server 2008 installation disk

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Instructions

  1. 1

    Insert the Windows Server 2008 installation disk in the DVD drive of the server and restart the machine. When prompted to "Press any key to boot from CD or DVD," press the space bar. If the server does not display this message, change the BIOS settings of the server in order to permit booting to DVD.

  2. 2

    Launch the Windows Recovery Environment. Accept the default language settings and click on "Next." Click on the "Repair your computer" link at the bottom of the "Install Windows" page. Leave the selection on "Use recovery tools that can help fix problems starting Windows" and click on "Next." Click on the "Command Prompt" link.

  3. 3

    Type "bootrec.exe /fixmbr" to repair the master boot record. Type "exit" to close the command prompt.

  4. 4

    Click on the "Restart" button to restart the computer. Remove the Windows Server 2008 installation disk from the drive to make sure the server does not boot to it.

Tips and warnings

  • Type "bootrec.exe /?" to learn about additional uses for the bootrec tool. This tool can be used to repair a number of other boot sector features.

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