Destroyed BCD with Linux Mint

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  1. TommyW126
    Posts : 18
    Win 7 HP x64
       New #1

    Destroyed BCD with Linux Mint


    Hi!

    I installed Linux Mint on my external HDD. Worked fine. Booted Linux when external HDD was plugged in, Win7 when not. Unfortunately at one point Linux Mint updated its kernel headers and I suppose it made an update to Grub with this. => no boot to Win7 although all data was still there.
    I tried a Win7 recovery cd image via USB-Stick (no cd drive available) => no windows found.
    I tried bootrec, bootsect, but that did not help ("element not found").
    There was a drive E: with 100mb which held a /boot folder.
    C: (with win7 on it) did not.
    I tried diskpart for activating partitions etc.
    Nothing worked.
    Someone suggested "sudo update-grub" in linux mint (still worked if plugged in). That one found windows and it looked like it was making an entry for it (beneath diverse linux mint options).
    Next restart brought only a grub-console, but no boot options. => no linux either now.
    I restartet using USB-Win7 recovery. Now the 100mb partition is gone (I suppose thats ok, since I sat it to hidden+boot in gparted), all the drive letters are wildly assigned in diskpart and I do not know what to do now.

    Thx for any help, Tommy
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  3. Maguscreed
    Posts : 6,668
    Windows 7 x64
       New #2

    Linux has obviously grabbed complete control over your boot process. If you are going to fix this I have a feeling you'll have more luck on the linux forums than here.

    Though I personally only deal with linux when I have too. It's possible some people here are different.
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  4. TommyW126
    Posts : 18
    Win 7 HP x64
    Thread Starter
       New #3

    Yeah, I also posted there. But I do not suppose them to know how to repair the Win7 boot (wanna remove Linux, does not support my printer - and now it does not do anything anymore either)
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  6. brianzion
    Posts : 3,612
    Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
       New #4

    hi there :)
    look at this thread i posted in and go to POST 11 this may help you ok. Any way to keep GRUB boot loader from over taking windows?

    you need to repair the MBR (Master Boot Record) with a rescue disc have a look at brinks tutorial to save me typing it all in
    How to Boot to the System Recovery Options in Windows 7 (method 2)
    System Recovery Options

    HOW TO MANUALY REPAIR WINDOWS BOOT LOADER PROBLEMS
    http://www.howtogeek.com/howto/32523...ader-problems/



    How to Boot to the Advanced Boot Options in Windows 7
    Advanced Boot Options


    UNPLUG THE DRIVE WITH LINUX ON
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  7. TommyW126
    Posts : 18
    Win 7 HP x64
    Thread Starter
       New #5

    The first link maybe would have helped, but now I can only boot the Win7 recovery CD. No Linux, no Win7.
    Second link: Recovery CD does not find Win7, so no automatic recovery is available.
    bootrec /fixboot gives "element not found". scanos option finds the partition holding Win7 (actually D:). But repairbcd option gives "element not found"
    Third link: there is no boot manager anymore. Just "grub>". Console! No Grub-Menu.
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  8. brianzion
    Posts : 3,612
    Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
       New #6

    my MBR in windows was destroyed when i was running kubuntu on another drive i used the repair disc and it fixed mine ok. and i was able to boot in to windows 7. my advice to every one installing linux when running windows 7 is DONT RUN IT WITH WUBI ON THE SAME DISC KEEP IT ON A SEPARATE DRIVE AWAY FROM WINDOWS. SO YOU CAN BOOT MANUALLY.
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  10. brianzion
    Posts : 3,612
    Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
       New #7

    i think in your case you are going to need the windows 7 instillation disc or the one you make when you get the machine.
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  11. brianzion
    Posts : 3,612
    Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
       New #8

    have a look at this program MBRWizard 3.0.46 beta / 1.53 Download MBRWizard 3.0.46 beta / 1.53 Free - A Master Boot Record management tool - Softpedia

    Dual Boot
    Last but not least, MBRWizard provides functionality to help solve most issues caused by experimenting with Linux or dual boot scenarios, as well as providing assistance with repairing MBR partition entries after recovering a disk image or virus strike.
    homepage MBRWizard! - The MBR Management Utility
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  12. TommyW126
    Posts : 18
    Win 7 HP x64
    Thread Starter
       New #9

    No, I do not want a complete Win7 reinstall. The data is still on the drive, although it is E: now. Thus it must be possible somehow to tell the machine to boot that? Because I do not have a CD-Drive. The (legal) Win7-image is on the HDD anyway, and so there is no way to bring it to an usb-stick again. (Did that for Win7 install from Win XP, but formatted the stick after installing).

    Edit: wrote this before last post by you
    Last edited by TommyW126; 09 Feb 2011 at 08:42. Reason: new post
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  13. brianzion
    Posts : 3,612
    Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
       New #10

    i did not mean a re-install on the installation disc you can recover windows in a repair with it. brinks tutorials explain all this.

    Advanced Boot Options
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