Win 7 Boot BCD issue after installing Ubuntu dual boot


  1. rookstar
    Posts : 2
    Windows 7 Pro 64 bits
       New #1

    Win 7 Boot BCD issue after installing Ubuntu dual boot


    Hello,

    I have been struggling with boot issues ever since I decided to install ubuntu 14.04 LTS along Win 7 64 bits on myVAIO computer. To install it I chose "Something else" and resized the partition myself within the Ubuntu Installer. At first I got GRUB working and finding Win 7 but I could not start it. after this boot-info: Ubuntu Pastebin, I reinstalled GRUB in /sda using the following commands:

    sudo update-grub
    sudo grub-install /dev/sda
    I got a seemingly quite common black screen from Windows Boot Manager saying this:

    HTML Code:
    File: \Boot\BCD

Status: 0xc000000f

Info: An error occured while attempting to read the boot configuration data.
From this message, I found out that I needed to rebuild the BCD and then reinstall GRUB to get a working dual boot.
    I have created a Win 7 64 bits repair USB and using diskpart, I know I have 4 primary partitions:

    1 - 100 MB - It seems to me that the boot files are supposed to be there. According to DISKPART, it s the volume C: and labeled "System Reserved"

    2 - 140 GB - Windows is installed on this partition. According to DISKPART, there is no volume associated with this partition and it is hidden

    3 - 81 GB - Ubuntu is installed on this partition

    4 - 999MB is SWAP
    Auto repair from Win 7 repair usb does not recognize my Windows 7 and does not work. Therefore, I have to work with the command prompt. I have tried most available tutorial on rebuilding BCDs. Basically, when I run all the tutorials I could find and they involved the following commands:

    bcdboot c:\windows /s c:
    I get: "Failure when attempting to copy boot files"

    bootrec /rebuildbcd
    I get:" Successfully scanned Windows installations. total identified Windows Installations: 1. [1] \?\GLOBALROOT\Device\HarddiskVolume2\Windows But when I try to add installation to boot list, I get: "The requested system device cannot be found"
    My current boot-info is available here: Ubuntu Pastebin

    I am definitely not an expert in this matter and I would really appreciate any good advice you can provide! Thanks a lot for your help.
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  3. rookstar
    Posts : 2
    Windows 7 Pro 64 bits
    Thread Starter
       New #2

    I am starting to get desperate, I have tried every tutorial available on this forums and others. Basically, auto repair does not see my windows system but it is seen by bootrec /scanos. however no matter what I try I always get one of those two error message:
    "The requested system device cannot be found" or "Faillure when attempting to copy boot files".

    Please help
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