The MBR is corrupt - how do I fix it?

Discussion in 'Windows & Other OS Discussion & Support' started by khelben1979, May 25, 2008.

  1. khelben1979

    khelben1979 New Member


    I have a serious problem over here and I hope to be able to fix this today. The problem is that the MBR has been corrupted because the Linux Grub bootloader has been unable to correctly identify Windows XP during the installation which has been located on a second harddisk.

    The Linux MBR has been written to the Windows disk and because of this I am unable to have the Windows disk up and running. I need to fix the Windows MBR somehow without reformatting the drive. What is your recommendations?

    Help is greatly apprecitated! Thanks!
  2. RoyBatty

    RoyBatty Well-Known Member

    Boot from the Windows XP installation CD, enter the Repair console and use the fixmbr command. That should fix it.
  3. khelben1979

    khelben1979 New Member

    Already tried that and it doesn't fix the problem.

    It reports that it has been able to succesfully alter the MBR, though, but it don't work.
  4. Teme

    Teme Super Moderator Staff Member

    Did you specify the drive? I think you should do it like that since the XP is located in the second disk. If it won't work then it's reinstallation of windows.
  5. khelben1979

    khelben1979 New Member

    Okay, but I'm curious about something here. Can fixmbr or fixboot destroy data on the harddrive? Do you know?

    So far I have tried fixmbr and fixboot without giving any parameter or specified any drives it is going to fix. Does this mean that nothing has been written to the MBR?

    Any good link for a f.a.q regarding these programs would be apprecitated, b.t.w. but since this forum contains specialists I haveto ask. (Time to sleep soon. :sleep:)
  6. Teme

    Teme Super Moderator Staff Member

    It just fixes the MBR. If there is XP installation it will repair that disc's MBR.
  7. CDsDontBurn

    CDsDontBurn AMD & Petrol Heads Mod

    what about just doing a direct windows repair? like, you press F8, go to install windows, etc. and then when you see the windows partition, select it and select the option of "repair." that should bring you to a prompt asking you to repair windows. it may have some tricky wording saying something along the lines of, "if you do this, you may lose your data" but you really won't, i've done that a bunch of times and it worked every time i ran the repair installation of windows.
  8. KillerAce_NL

    KillerAce_NL New Member

    Start the recovery console.
    type the next command: bootcfg /rebuild.
    this will repair your XP bootloader, you will be then able to start XP again.
  9. khelben1979

    khelben1979 New Member

    I would do a F8 and do a Windows repair if I was able to access the dvd-rw drive. Unfortunately for me, there is something wrong with the BIOS so it can't find the dvd-rw drive at the present. It's an old PC where I must configure master and slave with the plastic pins.

    Currently I have given up on this machine and he is going for a new motherboard, hopefully, in 2 weeks. It's just too much hassle getting it to work, but thanks for all the replys.

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