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Thread: Several OSs: which one is the MBR/bootloader pointing to?

  1. #1
    Join Date
    Dec 2008
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    232

    Several OSs: which one is the MBR/bootloader pointing to?

    I've got 5 OSs installed (including Windows). Question is; is it possible (with some commands perhaps) to see which OS has its bootloader installed in the MBR?
    Or I suppose (?) it's more like: which OS is the MBR pointing to?

  2. #2
    Join Date
    Jul 2010
    Location
    ozarks, Arkansas, USA
    Beans
    5,346
    Distro
    Xubuntu 13.10 Saucy Salamander

    Re: Several OSs: which one is the MBR/bootloader pointing to?

    OllieGab; Hi !
    Several ways from the command line to look at grub/MBR and installed OSs:
    Code:
    sudo debconf-show grub-pc
    sudo grub-probe -t device /boot/grub
    sudo grub-probe -t fs_uuid /boot/grub
    sudo grep menuentry /boot/grub/grub.cfg
    These should get you a good idea of what you are looking at.

    hth

  3. #3
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Several OSs: which one is the MBR/bootloader pointing to?

    I use this, but I also run bootinfoscript which Boot_repair runs. I include bootinfoscript as part of my rsync backup so I know partitions,versions, boot loaders and lots of useful info not documented anywhere else.

    Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
    https://help.ubuntu.com/community/Boot-Info
    Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
    https://help.ubuntu.com/community/Boot-Repair
    You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
    Install in Ubuntu liveCD or USB or Full RepairCD with Boot-Repair (for newer computers)
    http://sourceforge.net/p/boot-repair/home/Home/


    Boot Info Script courtesy of forum members meierfra & Gert Hulselmans
    Boot Info Script 0.61 is released April 2, 2012
    boot_info_script.sh" file renamed to "bootinfoscript
    http://sourceforge.net/projects/boot...foscript/0.61/
    Page with instructions and link to above new download:
    http://bootinfoscript.sourceforge.net/
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




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