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Thread: Dual boot 13.04 and Win7 - boots only to Windows

  1. #1
    Join Date
    Aug 2007
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    Dual boot 13.04 and Win7 - boots only to Windows

    (I am not an advanced user)
    I used to have a dual boot system - Win7 and Ubuntu 12.04 - Everything was working fine.
    My motherboard blew up. I had to replace it, and they installed Win7.

    I tried to install Ubuntu 13.04.
    The install apparently recognized that my disk had Ubuntu 12.04, because it accepted to UPGRADE to 13.04.
    Continued install until the end.

    After that, I tried to boot the system, but ONLY Win7 will boot.

    I am really stuck now. (Win7 works fine, but I miss Ubuntu)

    Should I try to install Ubuntu 1304 from scratch?

    Thanks in advance.
    Gilles

  2. #2
    Join Date
    Jun 2009
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    Chicago Suburbs
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    Ubuntu 14.04 Trusty Tahr

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    If you have no data to save, a reinstall is often a quick solution. But you may be able to repair with this or we can review the BootInfo report.

    Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
    https://help.ubuntu.com/community/Boot-Info
    Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
    https://help.ubuntu.com/community/Boot-Repair
    You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
    LighterWeight (Lubuntu based) Boot-RepairCD
    http://sourceforge.net/projects/boot-repair-cd/files/
    Full Ubuntu 13.04 liveDVD or USB Install with Boot-Repair included (for newer computers)
    https://help.ubuntu.com/community/LinuxSecureRemix
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    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.







  3. #3
    Join Date
    Aug 2007
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    137

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    Thanks for your reply.
    I installed and ran Boot-Repair.
    It gave the following URL:
    http://paste.ubuntu.com/5790760/

    I hope this means something to you...
    Gilles

  4. #4
    Join Date
    Jun 2009
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    Chicago Suburbs
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    Ubuntu 14.04 Trusty Tahr

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    I would not run the auto repair that installs to all disks. You could reinstall just to sdb. Some BIOS need a boot flag on a drive to let you boot. If you have issues add a boot flag to any primary partition on sdb as grub does not use it.

    If you are booting Windows directly, you have BIOS set to boot the drive that is sda. Change BIOS to boot from the drive that is sdb or the other 320GB drive. I have two 160GB drives and sometimes had to experiment before I understood how BIOS enumerated them.
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    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.







  5. #5
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    Aug 2007
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    Re: Dual boot 13.04 and Win7 - boots only to Windows

    I'm afraid this is getting beyond my capabilities.
    I tried to modify the boot drive, but the bios doesn't say "sda" or "sdb". Just a bunch of numbers and letters. I tried the five and when it ONLY boots in Windows, it gives me this: (I had made a typo originally, saying that it did not boot in Windows).

    error: file not found
    grub rescue

    Now I am lost.
    Gilles
    Last edited by gilch; June 22nd, 2013 at 10:47 PM.

  6. #6
    Join Date
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    Chicago Suburbs
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    Ubuntu 14.04 Trusty Tahr

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    Yes, BIOS shows drive by model & serial number. Model often has size inside it somewhere. So you should have two that start similarly but then have different serial numbers.

    Then grub does have an error and you should use Boot-Repair to reinstall to sdb. But change default of all drives to just sdb. I believe that is an option you have to change. You want to keep the Windows boot loader in sda.
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    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.







  7. #7
    Join Date
    Aug 2007
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    137

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    Ran into difficulties.
    1 ---- boot-repair was not found, so I reinstalled it.
    2 ---- then I made a selection for grub to use sdb
    3 ---- then boot-repair asked me to run three chroot commands.
    the first one was
    sudo chroot "/mnt/boot-sav/sdb2" dpkg -configure -a
    4 ---- when I ran that, it said
    Options marked[*] produce a lot of output - pipe it through 'less' or 'more' !

    ????So I was lost again (sorry)
    Gilles

  8. #8
    Join Date
    Jun 2009
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    Re: Dual boot 13.04 and Win7 - boots only to Windows

    Are you sure it is one line? I am not specifically familar with that set of command from boot repair, but you usually chroot press enter, then run other commands one at a time.
    Also quotes may not be correct. Boot-Repair must have created mount point.

    sudo chroot /mnt/boot-sav/sdb2
    dpkg -configure -a

    spaces are also important, often best to copy & paste.

    If running Boot-Repair from an Ubuntu live installer, you have to reinstall each time you reboot. You can download a versions with it installed as a repair tool.

    LighterWeight (Lubuntu based) Boot-RepairCD
    http://sourceforge.net/projects/boot-repair-cd/files/
    Full Ubuntu 13.04 liveDVD or USB Install with Boot-Repair included (for newer computers)
    https://help.ubuntu.com/community/LinuxSecureRemix
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    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.







  9. #9
    Join Date
    Aug 2007
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    137

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    I got the three chroot to run this time.
    When I rebooted, it booted still in Windows.

    I have to leave now, I hope I can get some more of your help tomorrow perhaps?
    Thanks for trying real hard to help.
    Gilles

  10. #10
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
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    Hidden!
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    Ubuntu 14.04 Trusty Tahr

    Re: Dual boot 13.04 and Win7 - boots only to Windows

    Golfing early, but will be around later in day.
    I regularly run an Advanced search on all my posts and it shows those with new info.
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    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.







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