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wiki.mbirth.de/know-how/software/windows/_posts/2010-07-13-restore-win7-mbr.md

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Restore Windows 7 MBR default 2010-07-13 23:29:17 +0200 2010-07-13 23:29:17 +0200 false
know-how
software
windows

If you installed Windows XP after Windows 7, you're left with the XP-MBR on your drive and thus only XP is booting.

If you happen to have hardware, which produces the Code 5 error upon trying to boot from the Win7-DVD, you can do the following to restore the Win7-MBR from within XP:

  1. boot into XP and insert the Win7-DVD

  2. open a Command Prompt

  3. navigate to the ?:\boot\ directory of the Win7-DVD (with ? being the letter of your DVD drive)

  4. run the following command: (with C: being the drive where Windows 7 is installed)

     bootsect.exe /nt60 C: /mbr
    
  5. reboot and use EasyBCD to add Windows XP to the Win7-Bootloader

On [unawave.de](http://www.unawave.de/windows-7-tipps/code5-error.html?lang=EN) you'll find instructions on how to create a Win7-DVD with the Vista-Bootloader so that you don't get the `Code 5` anymore.