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Thread: Grub Rescue prompt after 12.10 upgrade

  1. #1
    Join Date
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    Ubuntu 10.10 Maverick Meerkat

    Unhappy Grub Rescue prompt after 12.10 upgrade

    Dual boot HP desktop that had Windows 7 and Ubuntu 12.04 working fine until yesterday. Upgraded to 12.10 and the grub install gave an error of not being able to write to the boot sector. It looks like the situation is similar to the one in this bug.

    Here is the pastebin from an unsuccessful boot-repair - http://pastebin.ubuntu.com/1290132/

    Not booting at all now and goes back to grub rescue all the time.

    Can someone help so that the system shall start booting again?

  2. #2
    Join Date
    Jun 2007
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    Re: Grub Rescue prompt after 12.10 upgrade

    I just fixed mine. I ended up having to use the terminal method of repairing it. I followed the guide from here http://www.howtogeek.com/114884/how-...ntu-wont-boot/

    Just scroll down to the terminal section of it. Its not that bad. I have a different issue now though where neither my USB or network will work on the 3.5 kernel so I'm currently on the 3.2-31 kernel until I can figure out what else went wrong during my upgrade. I hope that this helps you get your system back up and running.
    webmaster www.thefuzz4.net
    Ubuntu Saucy on every computer in my house

  3. #3
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    Ubuntu 10.10 Maverick Meerkat

    Re: Grub Rescue prompt after 12.10 upgrade

    Thanks for the suggestion, but unfortunately that also didn't help me. Here is the log of what I tried: http://pastebin.ubuntu.com/1290276/

  4. #4
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    Ubuntu 10.10 Maverick Meerkat

    Re: Grub Rescue prompt after 12.10 upgrade

    After struggling for more than a day, uninstalled Ubuntu from this desktop !

  5. #5
    Join Date
    Jun 2007
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    Re: Grub Rescue prompt after 12.10 upgrade

    Did you just reinstall it? Or did you go with a different distro? I am starting my migration over to the Ubuntu Remix. Its still Ubuntu just no Unity Its all Gnome
    webmaster www.thefuzz4.net
    Ubuntu Saucy on every computer in my house

  6. #6
    Join Date
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    Ubuntu Development Release

    Re: Grub Rescue prompt after 12.10 upgrade

    According to your Boot-Repair log, you have this error when installing GRUB:
    Code:
    /usr/sbin/grub-bios-setup: warning: this LDM has no Embedding Partition; embedding won't be possible.
    /usr/sbin/grub-bios-setup: error: embedding is not possible, but this is required for RAID and LVM install.
    You can mark yourself "affected" by this bug:
    https://bugs.launchpad.net/ubuntu/+s...2/+bug/1061255

    As a workaround, you can install GRUB Legacy:
    run Boot-Repair --> Advanced options --> GRUB options --> tick the "GRUB Legacy" option --> Apply.

  7. #7
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    Re: Grub Rescue prompt after 12.10 upgrade

    Quote Originally Posted by YannBuntu View Post
    As a workaround, you can install GRUB Legacy:
    run Boot-Repair --> Advanced options --> GRUB options --> tick the "GRUB Legacy" option --> Apply.
    It workaround didn't helped me. I received error message with advise to setup grub in separate boot partition.
    Boot-info script http://paste.ubuntu.com/1305754/

  8. #8
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    Re: Grub Rescue prompt after 12.10 upgrade

    ok.
    So for the moment, you can restore direct access to Windows:
    1) backup your documents if not done yet
    2) Boot-Repair --> Advanced options --> tick "Restore MBR" --> Apply ,
    3) tell me the new URL that will appear,
    4) reboot the pc and tell me what you observe.

    tell i 'll tell you how to create a separate /boot.

  9. #9
    Join Date
    Aug 2011
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    Re: Grub Rescue prompt after 12.10 upgrade

    I restored acces to windows with bootable flash drive with win7 distributive, so I can't do this action now, sorry:
    3) tell me the new URL that will appear,
    Now I have only one OS with windows bootloader and I can't access to installed ubuntu... I will be searching information in google on weekend.
    i 'll tell you how to create a separate /boot.
    I don't want to do this. Maybe some way exists how to install old grub into MBR from bootable flash drive for example?
    I tried to install LinuxMint 13 with KDE a few weeks ago and nothing problems was with it GRUB

  10. #10
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    Re: Grub Rescue prompt after 12.10 upgrade

    Quote Originally Posted by ZoLToR View Post
    LinuxMint 13 with KDE a few weeks ago and nothing problems was with it GRUB
    AFAIK, Mint13 uses GRUB1.99 (same as Ubuntu12.04), so the problem may come from:
    - either GRUB2.00 (included in Ubuntu12.10)
    - or the location of your boot files (in this case you will need a /boot at the start of the disk)

    Quote Originally Posted by ZoLToR View Post
    Maybe some way exists how to install old grub into MBR from bootable flash drive for example?
    If you want to try GRUB Legacy, you can run Boot-Repair --> Advanced options --> GRUB options --> tick "GRUB Legacy" --> Apply.

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