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Thread: 12.04 on an already dual boot XP/W7 machine

  1. #11
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    Re: 12.04 on an already dual boot XP/W7 machine

    Your boot options (menu) are in boot.ini, but in the /Boot/BCD with Windows 7 and later versions of Windows.

    In Linux it is the boot flag, Windows calls it active partition. They mean the same thing.
    If in Live installer's terminal using fdisk (sudo fdisk -l) you see boot flag as an * .
    If you copy BCD it should have same entries, but not sure if different partition makes a difference or not, it may still need repairs.

    To fully understand Windows booting, go back and review the multibooters site, link in post #2.

    f8 to get to repair install screen, if you can start to boot
    http://www.sevenforums.com/tutorials...t-options.html
    http://www.sevenforums.com/tutorials...up-repair.html
    http://www.w7forums.com/startup-repair-t441.html
    https://support.microsoft.com/en-us/kb/927392/
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  2. #12
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    Re: 12.04 on an already dual boot XP/W7 machine

    In MiniTool Partition Wizard, XP partition appears as D:, Primary, Active & Boot. W7 appears as C:, Primary, System.

    If I set W7 as Active, then when booting I get

    BOOTMGR is not found.

    Then I boot using a Bootable CD built from MiniTool, then Rebuild MBR but to no avail. I have to set XP partition as Active again.

    If I set X7 partition as Active again, I think I should W7 Repair Disk. Now, is the problem located in W7 or Xp partition? Shouldn't I use a XP repair disk?

    Question: copying BCD from XP to W7 is made by setting W7 as Active? I feel as if spiraling down on this.

  3. #13
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    Re: 12.04 on an already dual boot XP/W7 machine

    Boot flag or active partition is just where MBR tells system where to go for more boot code. And you have more boot code in the PBR or partition boot sector.
    You have to copy bootmgr & /boot/BCD from XP to Windows 7, or use Windows repair CD (when boot flag is on Windows 7) to install a new copy of bootmgr and BCD.

    Did you not review how Windows works in multibooters site, post #2?
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  4. #14
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    Re: 12.04 on an already dual boot XP/W7 machine

    Quote Originally Posted by oldfred View Post
    Boot flag or active partition is just where MBR tells system where to go for more boot code. And you have more boot code in the PBR or partition boot sector.
    You have to copy bootmgr & /boot/BCD from XP to Windows 7, or use Windows repair CD (when boot flag is on Windows 7) to install a new copy of bootmgr and BCD.

    Did you not review how Windows works in multibooters site, post #2?
    I read the review but it is a lot of info and I finally get lost, while I just need to know how to copy bootmgr & /boot/BCD from XP to Windows 7, or find out where the boot flag is and later use the Windows repair CD.

    Seems as if the boot flag is in XP partition as it was the first O.S. installed, I later installed W7 in the other partition. I understand I should reach this scenario: W7 is the only active partition and there is unallocated disk space where I will install Linux, a similar scenario I had in the past in another PC.

    I will re-try later at home, thanks.

  5. #15
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    Re: 12.04 on an already dual boot XP/W7 machine

    I found this guide, it covers my scenario, XP installed first and W7 later. I understand that following these steps (using the Windows Repair CD) will copy the missing files to the W7 partition, once it is set as Active:

    https://www.terabyteunlimited.com/kb/article.php?id=411

    is that right?

  6. #16
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    Re: 12.04 on an already dual boot XP/W7 machine

    I do not know Windows Commands, but it looks like it is giving you exactly the same info but a bit more detail on using Windows commands to move boot flag to Windows 7 partition and either repair it or move boot files.
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  7. #17
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    Re: 12.04 on an already dual boot XP/W7 machine

    So Far So Good! I followed the instructions and now W7 boots without the boot menu
    Earlier version...
    Window 7

    XP partition is still there and seen as D: from W7. Now Linux installation follows next. I guess the Live CD disk will ask me where I want it to be installed, I will be able to choose that partition, won't I?

    Then after Linux is installed, will it automatically provide for a startup menu (Linux/W7) or will I have to do something?

  8. #18
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    Re: 12.04 on an already dual boot XP/W7 machine

    Be sure to use Something Else install option.
    Have you backed up all your data and/or Windows or a way to reinstall Windows 7?

    Grub will have a boot menu and offer to boot either Ubuntu or Windows.

    https://help.ubuntu.com/community/GraphicalInstall
    https://help.ubuntu.com/community/WindowsDualBoot

    Lots of detail, screenshots and essential info.14.04 Something Else example
    http://www.dedoimedo.com/computers/u...all-guide.html
    http://askubuntu.com/questions/34326...g-installation
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  9. #19
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    Re: 12.04 on an already dual boot XP/W7 machine

    "Be sure to use Something Else install option."

    MMmmm...no. I just got rid of the XP partition (W7, Control Panel, Disk Management) and now I have that unallocated disk space, where I will install Linux, so I will pick Install Linux alongside... option.

    Will do it tomorrow as now it's too late here.

    Thanks.

  10. #20
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    Re: 12.04 on an already dual boot XP/W7 machine

    Linux successfully installed alongside W7.

    I first deleted the XP partition from W7, then I booted with Ubuntu 12.04 live CD and installed it. I picked the first option, Install Ubuntu alongside..." and it took that unallocated disk space. The boot menu is shown with W7 as the last option (I will use it because of the guitar effects application; Linux's Rakarrack and Guitarix are plagued with clicks and pops).

    Many Thanks

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