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Thread: How to Multi-boot (Maintain more then 2 OS)

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  1. #31
    Join Date
    Mar 2008
    Beans
    4,715
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: How to Multi-boot (Maintain more then 2 OS)

    xavier0912, try this:

    Boot Ubuntu, open a terminal and type
    Code:
    sudo grub
    grub> root (hd1,1)
    grub> setup (hd0)
    This will install GRUB on the MBR of sda, and direct it to boot sdb2 (the boot partition).

    While still at the grub> prompt, next type
    Code:
    grub> root (hd1,5)
    grub> setup (hd1,5)
    This installs GRUB on the sdb6 partition (your Jaunty installation).
    You need this so that when you use the "chainloader +1" command, GRUB on the MBR will hand-off to GRUB on sdb6 to boot Jaunty. For each additional Linux distro that you install, you'll need to install GRUB (using the "root (hdX,Y)" and "setup (hdX,Y)" commands) on that partition too.

    Now quit grub:
    Code:
    grub> exit
    Next, at the terminal prompt, type
    Code:
    sudo mount /dev/sdb2 /mnt
    gksu gedit /mnt/boot/grub/menu.lst
    This should open the menu.lst on sdb2 (the boot partition).

    Change

    Code:
    title Ubuntu
    root (hd1,1)
    chainloader +1
    to

    Code:
    title Ubuntu
    root (hd1,5)
    chainloader +1
    since you want to boot sdb6, not sdb2.

    Save and exit gedit. Reboot. Let us know how it goes.
    Last edited by unutbu; August 24th, 2009 at 09:36 PM.

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