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Thread: Grub question

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  1. #1
    Join Date
    Apr 2009
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    228

    Grub question

    Every time I do a fresh install, as long as GRUB is never invoked, a cold-boot or reboot proceeds directly to a login screen, as it should.

    If for any reason, upon boot/reboot, I invoke GRUB (left-Shift), GRUB starts, as expected, but after that first invocation, every boot/reboot automatically starts GRUB whether I want it to or not. Doesn't bother me much, but just curious.

    Why is this happening, is it normal, and is there a way I can prevent GRUB from starting like that, without removing the ability to invoke it later with left-shift if I need to?

    Thanks.
    Last edited by r_avital; August 21st, 2013 at 03:49 AM.
    http://folding.extremeoverclocking.c...avital&t=45104
    "I fear the day technology will surpass our human interaction. The world will have a generation of idiots."
    ― Albert Einstein

  2. #2
    Join Date
    Nov 2011
    Location
    /dev/root
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    Re: Grub question

    You can read about grub and in particular the hidden feature at this link

    https://help.ubuntu.com/community/Grub2#Hidden

    I hope it helps

    Edit: See also https://help.ubuntu.com/community/Grub2/Setup

  3. #3
    Join Date
    Apr 2009
    Beans
    228

    Re: Grub question

    sudodus,

    Many thanks. Perfect explanation.
    My grub file shows a timestamp of having been edited yesterday. I know I didn't touch it. The only thing in that file that could explain the behavior, is GRUB_HIDDEN_TIMEOUT which was set to 0 and commented out. I know I did not comment it out, never opened that file until today. I can only guess it gets commented out when a second kernel gets installed as part of an update.

    At any rate, commented it back in. Just trying to get a quicker bootup, which is already impressivley very sort.

    Thanks again
    http://folding.extremeoverclocking.c...avital&t=45104
    "I fear the day technology will surpass our human interaction. The world will have a generation of idiots."
    ― Albert Einstein

  4. #4
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    Nov 2011
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    Re: Grub question

    You are welcome

    When you feel happy with the solution, please mark this thread as SOLVED according to this link

    https://wiki.ubuntu.com/UnansweredPo.../SolvedThreads

  5. #5
    Join Date
    Apr 2009
    Beans
    228

    Re: Grub question

    My bad, sorry about that. I mean, I still don't know who/how/why the change was made, but it's good enough that I can undo it.
    http://folding.extremeoverclocking.c...avital&t=45104
    "I fear the day technology will surpass our human interaction. The world will have a generation of idiots."
    ― Albert Einstein

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