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Thread: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

  1. #1
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    Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Hi There,

    I am glad i am back here after a long long time...
    I had a 12.2 LTS which i last week upgraded to 14.04 LTS.
    Its a triple boot with MS XP, Ubuntu and Debian installed on a HDD, then i have another 2 HDD's for data and stuff.

    I followed the install guide by clicking "something else" as i wanted to keep my existing /home data and install boot loader on a separate partition.
    Everything went without any glitch but after reeboot i am stuck at grub rescue prompt.
    Says "file not found"

    I tried reinstallng but still nothing. I tried searching for the /boot files withing grub by the "ls" and "ls (hd0,1)" commands
    still not finding the boot.

    Please guide me.
    Regards Richlyn
    Windows XP,Lucid and Oneric multi boot
    160 and 500 HDD,2 GB Ram

  2. #2
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Welcome back. Try Boot Repair. Use the recommended repair.

  3. #3
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    I did try this out using both options,
    however when i tried to install it did not find the source or something but it was not installed.
    and i made a bootable pendrive however on restarting does not boot to it.
    Regards Richlyn
    Windows XP,Lucid and Oneric multi boot
    160 and 500 HDD,2 GB Ram

  4. #4
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    Ubuntu Development Release

    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    sometimes a clean fresh install is more stable then a dist-upgrade.
    actual grub (aka grub2/grub-pc) is way different that grub1 (aka legacy) and is supposed to be installed on the linux MBR partition. (aka /dev/sdx , with x=a -> z)

  5. #5
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Should i reinstall again just mentioning my home partition and leaving the rest to itself?
    Regards Richlyn
    Windows XP,Lucid and Oneric multi boot
    160 and 500 HDD,2 GB Ram

  6. #6
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    If you reinstall, it goes without saying, BACKUP any valuable data.

    That is drastic though, and a reinstall if very much the last resort.

    Quote Originally Posted by richlyn9 View Post
    I did try this out using both options,
    however when i tried to install it did not find the source or something but it was not installed.
    and i made a bootable pendrive however on restarting does not boot to it.
    Not sure if I understood this, but I'd perservere with trying to fix grub a bit more first. Perhaps boot into a Live desktop (from install media) and then install Boot Repair using this option rather than by creating a Boot Repair disk/USB, if that was what you were doing before.

    You need to be online for this method. It installs the Boot Repair PPA so all dependencies and software will be there. Nothing should be missing this time. As you've not been able to use Boot Repair yet we don't know if it will fix your issue.

    Once you boot to a Live desktop (Try Ubuntu), it is three commands:

    Code:
    sudo add-apt-repository ppa:yannubuntu/boot-repair
    sudo apt-get update
    sudo apt-get install -y boot-repair && boot-repair
    ... then run Boot Repair. Hopefully I am not misunderstanding you and this actually helps.
    Last edited by Bucky Ball; March 5th, 2015 at 03:04 PM.

  7. #7
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    no worries...will try this and revert
    Regards Richlyn
    Windows XP,Lucid and Oneric multi boot
    160 and 500 HDD,2 GB Ram

  8. #8
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Just a thought: Which OS was running grub? Debian or Ubuntu? It's generally the one that was installed last, unless you manually changed where it was going to install its grub.

  9. #9
    Join Date
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Last i installed debian, ao i am guessing debian.
    Regards Richlyn
    Windows XP,Lucid and Oneric multi boot
    160 and 500 HDD,2 GB Ram

  10. #10
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    Re: Upgrade to Ubuntu 14.04.2 LTS from 12.02 LTS Grub broken

    Okay. Shouldn't matter. Try the instructions in post #6 and report back with your progress.

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