How do I switch bootloader?

Discussion in 'all things UNIX' started by taytong888, Apr 3, 2012.

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  1. taytong888

    taytong888 Registered Member

    Joined:
    Mar 26, 2006
    Posts:
    166
    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. Boot stanzas are stored in opensuse's /boot/grub/menu.lst.

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


    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. I can still boot into different Os's but I'd rather have legacy Grub menu to boot from. 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.

    o_O
     
  2. Pedro

    Pedro Registered Member

    Joined:
    Nov 2, 2006
    Posts:
    3,502
    If everything is working, why do you want to switch back?
    It's weird at first, and i surely didn't memorize anything, but it's not that bad to configure.
     
  3. taytong888

    taytong888 Registered Member

    Joined:
    Mar 26, 2006
    Posts:
    166
    Hello Pedro,

    1. Yes, Grub2 menu does work and it also has the advantage of showing recovery kernel boot item for each OS. I may choose Grub2 of Ubuntu as default bootloader at a later date, once I get more comfy with using Grub2.

    2. For now, I like the simplicity of legacy grub as default bootloader because from the boot menu I can go directly into opensuse and make changes in /boot/grub/menu.lst if necessary.

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

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