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Thread: Grub problem ¿Two grubs?

  1. #11
    Join Date
    Feb 2007
    Location
    Brasil
    Beans
    102
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Grub problem ¿Two grubs?

    Because you can directly access an operating system by changing the boot priority in BIOS.

  2. #12
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Grub problem ¿Two grubs?

    I have 3 drives with Ubuntu on 2 of them. But all three MBRs boot different versions of Ubuntu as default. I normally boot the drive with the MBR set for the version I use the most and can select the others from the grub menu. But I can also use f12 or BIOS to select the other installs.

    You can boot into any version and install grub2's boot loader to any MBR from that install.

    #reinstall from working (not liveCD) system - first find Ubuntu drive:
    sudo fdisk -l
    #if it's "/dev/sdb" then just run:
    sudo grub-install /dev/sdb
    #If that returns any errors run:
    sudo grub-install --recheck /dev/sdb
    sudo update-grub
    #to get grub to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions
    #To see what drive grub2 uses see this line - grub-pc/install_devices:
    sudo debconf-show grub-pc
    Last edited by oldfred; May 3rd, 2011 at 01:24 PM. Reason: Add install MBR info
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #13
    Join Date
    Jan 2005
    Beans
    31

    Re: Grub problem ¿Two grubs?

    Wow, you guys have been very helpful.
    You have taught me new things. I'll work on them on the weekend, but I'm pretty sure the problem will be solved, as it is not an Ubuntu problem, it is a user-knowledge problem.
    I'll be marking this post as solved.

    Thanks!!!

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