windows 7 boot loader missing/corrupt

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  1. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #21

    meant to say list volume (not volumes)
    The screen shot shows you can get quite a bit disk information from the command prompt.
    Attached Thumbnails Attached Thumbnails windows 7 boot loader missing/corrupt-diskpart.jpg  
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  2. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #22

    Try doing what I did in my last post/screen shot
    But your info shows you have the 100MB system reserved partition. This contains the boot folder and the boot manager. It also has a letter assigned which it shouldn't - see mine. Furthermore it's c:.

    The last column (see mine) under info shows the the 100MB is system (active) & beneath it is boot.
    (The MS terminology gets a bit of flak from some. "boot" is where the operating system lives and the boot loader winload.exe. "system" the boot manager and boot folder (with the BCD inside it))
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  3. Posts : 13
    Windows 7 Ultimate x64
    Thread Starter
       #23

    Thank you very much for that,But how would i go about removing the letter from the Volume?
    Partition wizard i assume?
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  4. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #24

    chbell10 said:
    Thank you very much for that,But how would i go about removing the letter from the Volume?
    Partition wizard i assume?
    Hold off on the letters for the moment. Your running cmd from the repair disk or Win7 disk - correct? So it's probably arbitrarily assigned letters.

    Ok so command line operations on C: will target the system reserved partition. Command line operations on E: will target your OS (label C: when windows is running).
    Last edited by mjf; 03 Nov 2010 at 20:46. Reason: Add
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  5. Posts : 13
    Windows 7 Ultimate x64
    Thread Starter
       #25

    yes, from the tools section of the repair disk, or Shift F10.
    So do you think that the Volume letter could be causing an error when trying to repair the startup?

    At this point, it seems like my only option would be to try and get my files into an external HDD, and just format the entire drive?
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  6.    #26

    Grub isn't stored in a partition. It's stored in the boot sector.. the very first sector of the HDD. Otherwise gregrocker has the correct advice. The fastest and easiest way to restore the windows bootloader after removing another bootloader is to boot to the windows 7 install disk, type shift+f10 to open a command prompt then type:

    Bootrec /fixboot
    Bootrec /fixmbr
    Bootrec /rebuildbcd

    It works every time.
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  7. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #27

    Number one priority is getting your files safe. After that we've got nothing to loose - agreed? Going back to scratch format, etc may be the pragmatic solution.

    Do you need any assistance getting your files off the disk???
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  8. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #28

    madtownidiot said:
    Grub isn't stored in a partition. It's stored in the boot sector.. the very first sector of the HDD. Otherwise gregrocker has the correct advice. The fastest and easiest way to restore the windows bootloader after removing another bootloader is to boot to the windows 7 install disk, type shift+f10 to open a command prompt then type:

    Bootrec /fixboot
    Bootrec /fixmbr
    Bootrec /rebuildbcd

    It works every time.
    Yes
    But I thought they said they had tried that.
    If not do it of course.
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  9. Posts : 69
    Windows 7 professional x86/
       #29

    Yes, we've tried it - I said in an earlier post it works 100% of the time for me also. /fixmbr is all that's needed.

    I've been looking over various forums and when it gets to this stage I am yet to see anyone fix the issue without a reinstall.

    chbell has a lot of patience, I'd have wiped it long ago :)
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  10. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #30

    chbell10,
    looked back over the posts
    never mind the bcdedit /export step
    just try running the 3 bootrec commands (again) mentioned above
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