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Thread: How do I switch default bootloader?

  1. #1
    Join Date
    Nov 2006
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    How do I switch default bootloader?

    Hello,

    I have a multiboot system in which the default bootloader is legacy Grub. From the Grub menu I can boot into opensuse 12.1 (legacy Grub), Windows 7 or Ubuntu 12.04 (Grub2), etc.

    During today's updating of Ubuntu, the screen says:

    Writing Grub(2) to boot device (/dev/sda7) failed. Continue?
    So I had no choice but to check the dev/sda box and hit Forward.

    Now when I reboot, I only see the Grub 2 menu. Obviously I unknowingly chose Grub2 as the default bootloader.

    How do I change the default bootloader from Grub2 back to legacy Grub as I have before?

    Thanks in advance for your help.


  2. #2
    Join Date
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    Re: How do I switch default bootloader?

    You decide which bootloader you want to use, and leave/have that installed. Changing back depends on how the old one was installed. Under the old distro, uninstall its bootloader package, then install again. There may be faster more direct options, but this suggestion is more likely to accomplish this under a wider range of distros and their versions. You then add the boot entries into whichever boot loader you want to use.
    Looking for 3 button mice WITHOUT roller, PS/2 or USB.

  3. #3
    Join Date
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    Re: How do I switch default bootloader?

    you might want to take a look at esay BCD.

    http://easybcd.en.softonic.com/
    Dave
    Registered Linux User #462608
    ubuntu 14.04 LTS ; xubuntu 14.04 LTS

  4. #4
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    Ubuntu 12.04 Precise Pangolin

    Re: How do I switch default bootloader?

    Your grub2 should present you with all three systems, in Ubuntu run this if it does not:

    sudo update-grub

    There was a bug.
    It just changed to fix released:
    https://bugs.launchpad.net/ubuntu/+s...b2/+bug/972250
    https://bugs.launchpad.net/ubuntu/+s...b2/+bug/972411
    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.







  5. #5
    Join Date
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    Re: How do I switch default bootloader?

    The other win for Grub2 is that you can customise it to look more to your liking.

    Find more about it here: http://www.webupd8.org/2010/11/grub-...e-default.html
    Windows free since '09 - never looked back!

  6. #6
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    Re: How do I switch default bootloader?

    The other win for Grub2 is that you can customise it to look more to your liking. Including which O/S you want to make boot default.

    Find more about it here: http://www.webupd8.org/2010/11/grub-...e-default.html
    Windows free since '09 - never looked back!

  7. #7
    Join Date
    Nov 2006
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    Re: How do I switch default bootloader?

    Hello kc1di,

    Thanks for your reply. I did look at easyBCD, but have not found the right way to boot several Linux distros along with Windows. I did see one blog on the web but it's for booting one Linux distro only.

  8. #8
    Join Date
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    Re: How do I switch default bootloader?

    Hi everyone,

    I found the solution to reinstall legacy grub from an old note courtesy of caf4926 in opensuseforums:

    1. Boot into opensuse > Terminal
    2. grub
    3. find /boot/grub/menu.lst
    4. Terminal shows for example: (hd0,1)
    5. root (hd0,1)
    6. setup (hd0)
    7. quit
    8. reboot


  9. #9
    Join Date
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    Re: How do I switch default bootloader?

    Quote Originally Posted by iClouseau88 View Post
    Hi everyone,

    I found the solution to reinstall legacy grub from an old note courtesy of caf4926 in opensuseforums:

    1. Boot into opensuse > Terminal
    2. grub
    3. find /boot/grub/menu.lst
    4. Terminal shows for example: (hd0,1)
    5. root (hd0,1)
    6. setup (hd0)
    7. quit
    8. reboot

    Glad you got it sorted out
    Dave
    Registered Linux User #462608
    ubuntu 14.04 LTS ; xubuntu 14.04 LTS

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