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Thread: Backtrack grub and Ubuntu grub

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  1. #1
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    Default Backtrack grub and Ubuntu grub

    I tried to perform a triple install using Windows XP already installed, Ubuntu 9.10 Karmic Koala already installed, and tried to install Backtrack 4 Final in to the mix. The XP loader worked but the Ubuntu loader gave me an error 15, which I have corrected, but grub doesn't have the option to boot into Backtrack anymore. Can I manually add it or something in Grub2?

    Using Dell Inspiron 640m POS w/ 2gigs RAM, 2ghz Intel Core 2 Duo Dual-core processor, w/ XP, Ubuntu 9.10, and Backtrack 4 Installed but floating somewhere on the harddrive.

    Thanks in advance

  2. #2
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    Default Re: Backtrack grub and Ubuntu grub

    Sounds like you need to install grub again from ubuntu and maybe manually create the menu.lst

  3. #3
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    Default Re: Backtrack grub and Ubuntu grub

    You should be able to run update-grub from Ubuntu terminal. And that will detect all OS's. No need for manual editing.

  4. #4
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    Default Re: Backtrack grub and Ubuntu grub

    Grub2 is not part of BT4
    Grub2 is not meant to be edited like Grub1 here's how to reinstall Grub2

    Using Ubuntu 9.10 livecd
    Here assuming the Ubuntu partition is sda7,and /boot partition is sda6 (if you have a separate /boot partition).
    Boot up ubuntu from the livecd,open terminal and run:

    Code:
    sudo -i
    mount /dev/sda7 /mnt
    mount /dev/sda6 /mnt/boot  #skip this one if not have a separate /boot partition
    grub-install --root-directory=/mnt/ /dev/sda
    Reboot into ubuntu and run
    Code:
    sudo update-grub
    all done.

    From here Grub 2 Basics - Ubuntu Forums

  5. #5
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    Default Re: Backtrack grub and Ubuntu grub

    maybe you have to check grub using this command

    gksudo gedit /boot/grub/menu.lst

    set the backtrack boot configuration

  6. #6
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    Question Re: Backtrack grub and Ubuntu grub

    It's probably easier to use the Ubuntu grub only, as it's the one that will change more often with kernel updates (I expect BT4 to remain more 'frozen' to its release version, as in the past). 9.10 installed grub2 as well, correct? It uses the dynamic entry building with the scripts (in Ubuntu) under /etc/grub.d. You can try copying the BT4 grub entry to 40_custom and rebuild using update-grub. The problem would be if you can't boot to BT4, you won't have the working grub entry Maybe someone else can post it, I haven't installed BT4-final yet. Here's a link on Grub2:
    GRUB 2: A Guide for Users

    Lacoste

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