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Thread: boot windows partition from vbox

  1. #11
    Join Date
    Oct 2009
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    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: boot windows partition from vbox

    Quote Originally Posted by z3nhakr View Post
    I do now!
    it was disabled by default. are there any drawbacks of having it enabled?
    No drawbacks.

    Quote Originally Posted by sudodus View Post
    What about the problem with repeated activations? See the attached picture.
    *shudders* Running into that with some VMs at work that have been moved between different VM software. NOT fun.

    EDIT: @OP: If this is a wubi install, I doubt it will be a good idea to access the windows install on a VM because when you are using Wubi, you are running off a disk image on the windows partition.
    Last edited by CharlesA; July 20th, 2012 at 07:22 PM.
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  2. #12
    Join Date
    Jan 2012
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    167
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: boot windows partition from vbox

    iv migrated my wubi install to a new partition but im still getting the same problem. grub is acting strangely and i think thats whats causing it. when i boot im first taken to the windows boot manager which looks like this:

    Ubuntu 12.04 #wubi install#
    windows 7 ultimate
    ubuntu #migrated install/non wubi#

    so i select the non wubi ubuntu which take me to grub. then i select the windows boot manager from the grub list and this is what the windows boot manager looks like now:

    ubuntu
    windows 7 ultimate (recovered)

    this is what my windows boot manager looked like before i migrated?!?! and i also get the SAME one when i boot via virtualbox. so this means the previous configuration is still stored somewhere right? i deleted all of my windows BCD backup files and cant find anything else. this one has me stumped... Any ideas?
    If only I could grep life.......

  3. #13
    Join Date
    Jan 2012
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    167
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: boot windows partition from vbox

    grub is still being strange but i managed to boot windows 7 from virtualbox by running it as root. i know thats probably not the best idea but hey, it works
    If only I could grep life.......

  4. #14
    Join Date
    Nov 2011
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    /dev/root
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    Hidden!

    Re: boot windows partition from vbox

    If you want get a clean grub setting, I suggest that you reinstall grub (and after that update-grub) according to this link

    https://help.ubuntu.com/community/Grub2

    Reinstalling GRUB 2 from a Working System

    If Ubuntu is operating normally, boot into the working installation and run the following command from a terminal.

    X is the drive (letter) on which you want GRUB to write the boot information. Normally users should not include a partition number, which would produce an error message as the command would attempt to write the information to a partition.

    Code:
    sudo grub-install /dev/sdX  # Example: sudo grub-install /dev/sda
    This will rewrite the MBR information to point to the current installation and rewrite some GRUB 2 files (which are already working). Since it isn't done during execution of the previous command, running sudo update-grub after the install will ensure GRUB 2's menu is up-to-date.
    and
    Code:
    sudo update-grub
    afterwards.

  5. #15
    Join Date
    Jan 2012
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    167
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: boot windows partition from vbox

    thanks i'll try that. any ideas on why i have to boot as root?
    If only I could grep life.......

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