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Thread: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

  1. #1
    Join Date
    Mar 2007
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    GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    I have a Dell Studio 14 laptop with Windows 7 64bit preinstalled. The processor is core i5 and the machine has 4GB RAM. I freed 25GB of memory from my Hard disk and tried to install Ubuntu 10.04 (AMD). Everything went fine. I restarted and Logged into Ubuntu. It worked like a charm. Then I restarted to Windows7. This also worked well as expected.

    But, when I rebooted again, I got a black screen saying that
    “No modules found. Press any key to restart”
    When I press a key, it says “No operating system found”, probably after checking through a network (it printed lines starting with PXE).

    I tried exactly in the same way with Ubuntu 8.04 in my machine, and this worked without any problem. The Bootloader was not corrupted after restarting from Windows. I noticed the problem with Ubuntu 9.10 and 10.04. I feel like a problem regarding the bootloader version. AFAIK, 9.10 and 10.04 is using GRUB2 when 8.04 use the old version of GRUB. Will I have to switch to the legacy GRUB? (I would love to keep using GRUB2). If yes, I would like to know How.

    Is there any way to resolve this issue?
    Thanks and Regards

  2. #2
    Join Date
    Mar 2010
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    Dublin, Ireland
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    Ubuntu 12.10 Quantal Quetzal

    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    If you boot from a LiveCD, does:
    Code:
    sudo fdisk -l
    show your Linux and Windows partitions?

    Maybe you need to reinstall Grub using the instructions found at point 13, here.
    Matt
    blog.mattrudge.net for extra helpings of geeky Ubuntu goodness
    Get the Ubuntu Weekly Newsletter

  3. #3
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    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    fdisk shows the windows and linux partitions.
    I reinstalled GRUB2 from 10.04 live cd. But, whenever I boot into windows7, then restart the machine, GRUB 2 is again lost.

  4. #4
    Join Date
    Nov 2009
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    Segur De Calafell, Spain
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    Ubuntu 12.04 Precise Pangolin

    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    I hate this branded machines. You are right, it's related to grub2 vs grub1 but it's not ubuntu's fault.

    Months ago we were very puzzled here on the forum with such behavior and the conclusion was (can't remember right now how strong was the evidence, but there was some):

    Some HP and Dell machines have pieces of HP/Dell software working behind your back without you even knowing about it. After you boot windows they think your MBR is corrupted and do something. That something slices a piece of grub2 and makes it unusable. Grub1 is smaller in size and is not affected.

    If you boot only ubuntu grub2 will work perfectly for as long as you want. The first boot into windows destroys it.

    I can't remember if there was a definite solution, but now when you know the problem maybe google and searching this forum/archive can help. I'm pretty sure this is your problem.

    Not sure if Dell support will have something smart to say. After all, adding ubuntu is not forbidden.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  5. #5
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    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    We had so many the meierfra posted a page:

    http://sourceforge.net/apps/mediawik..._Writes_To_MBR
    http://www.supergrubdisk.org/wiki/WindowsErasesGrub
    In Windows 7, I had to remove Windows 7 DataSafe.
    HP ProtectTools, Dell Recovery, and a few others write into MBR meierfra.
    https://bugs.launchpad.net/ubuntu/+s...b2/+bug/441941
    https://bugs.edge.launchpad.net/ubun...1?comments=all
    Dell Media direct issues with MBR
    http://ubuntuforums.org/showthread.php?t=923576
    http://ubuntuforums.org/showthread.php?t=1344828
    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.







  6. #6
    Join Date
    May 2010
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    Ubuntu 10.10 Maverick Meerkat

    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    I have the same problem with Windows XP and Ubuntu 10.04.

  7. #7
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    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    a546 welcome to the Ubuntu Forum.

    the problem you have does not sound like what this thread is discussing which is primarily with win7 software overwriting the MBR. Please start a new thread and add some more information on exactly what is happening. Is your grub boot loader only not work after using certain software in windows? If it does not start at all check any of many threads on that issue first.
    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.







  8. #8
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    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    Quote Originally Posted by oldfred View Post
    a546 welcome to the Ubuntu Forum.

    the problem you have does not sound like what this thread is discussing which is primarily with win7 software overwriting the MBR. Please start a new thread and add some more information on exactly what is happening. Is your grub boot loader only not work after using certain software in windows? If it does not start at all check any of many threads on that issue first.
    Okay, thanks.

  9. #9
    Join Date
    May 2010
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    Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    I have been struggling with this problem, when dual-booting 10.04 and Windows 7, on a Dell Inspiron 1545, 64 bit. The result has been a wipe-out of GRUB after re-booting to Windows, reulting in an unbootable machine and "Module not found..." appearing. The problem is undoutedly the ill-disciplined Dell software that Dell have added in - I don't think it's a problem with either Windows 7 or 10.04, (GRUB 2), or their interaction. Getting rid of the Dell software works.

    I have found the following solution to work for me (tested several times now and couldn't break it):

    • Boot into Windows 7 using the supplied re-installation DVD
    • Don't install but pick "Repair my PC"
    • Follow the Windows instructions as given in the excellent site:
    http://mattrudge.wordpress.com/2010/...-ubuntu-10-04/

    • Then boot into Windows 7, from the hard disk, "as normal"
    • Uninstall Dell DataSafe in Control Panel>Programs and Features
    • Reboot using an Ubuntu install cd or similar device using the "try-out" option rather than the install
    • Follow the "Windows boots, but Ubuntu won’t..." instructions on Matt Rudge's site as above
    • Reboot and GRUB 2 should work...
    Voila - seems to work

  10. #10
    Join Date
    Jun 2007
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    Alexandria, Virginia
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    Ubuntu

    Thumbs up Re: GRUB2 bootloader crashes with Win7 and Ubuntu 10.04 dual boot

    Thanks, mikef01. These steps worked for me.
    The only difference was that I had no usable Windows 7 recovery disk, so I had to reinstall grub in Ubuntu from the Ubuntu live cd, then boot Windows 7, remove the Dell Data Safe programs (I uninstalled all 3--basic, supporting software and online backup), then do the grub2 reinstall from the Ubuntu live cd a second time.
    Now all is good.

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