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Thread: Where is my grub? (or rather grubs)

  1. #1
    Join Date
    Jul 2013
    Beans
    3

    Where is my grub? (or rather grubs)

    I have a dual boot system (Windows 7 + Ubuntu)

    In my sda hard drive I have installed Windows.
    In my sdb Solid State drive I have Ubuntu.

    If I set in the bios to boot from sdb the computer does not boot. It can only boot if I set the bios to boot from sda.
    But using the bootinfoscript it looks like grub is in my sdb drive, which is a contradiction:

    sda1: __________________________________________________ ________________________

    File system: ntfs
    Boot sector type: Windows Vista/7: NTFS
    Boot sector info: No errors found in the Boot Parameter Block.
    Operating System: Windows 7
    Boot files: /bootmgr /Boot/BCD /Windows/System32/winload.exe
    sdb1: __________________________________________________ ________________________

    File system: ext4
    Boot sector type: -
    Boot sector info:
    Operating System: Ubuntu 12.04
    Boot files: /boot/grub/grub.cfg /etc/fstab

    But in another line of the output of the same screen, it says that grub is installed in both drives..which makes me crazy!

    => Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of
    the same hard drive for core.img. core.img is at this location and looks
    in partition 72 for .
    => Grub2 (v1.99) is installed in the MBR of /dev/sdb and looks at sector 1 of
    the same hard drive for core.img. core.img is at this location and looks
    in partition 72 for .


    Anybody understands what is going on? I would like to boot from sdb only.

  2. #2
    Join Date
    Jun 2006
    Location
    Nux Jam
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Where is my grub? (or rather grubs)

    sudo dpkg-reconfigure grub-pc

  3. #3
    Join Date
    Jul 2013
    Beans
    3

    Re: Where is my grub? (or rather grubs)

    Can you tell me what will do that command?

  4. #4
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Where is my grub? (or rather grubs)

    You can use Boot-Repair or your Windows repairCD to install a Windows boot loader to sda. I think Dino's command will just let you reinstall grub to sdb, which you may want to do, to make sure you have the most current version in sdb and that grub remembers to reinstall grub to sdb not sda on major updates.

    How to restore the Ubuntu/XP/Vista/7 bootloader
    https://help.ubuntu.com/community/Re...ta/7Bootloader
    https://help.ubuntu.com/community/Gr..._Broken_System

    If you do not have a Windows repairCD make one. You must have a repairCD or LiveCD for the current version of every system you have installed.

    Make your own Windows repairCD (not vendor recovery):
    http://forums.techarena.in/guides-tutorials/1114725.htm
    Windows users only - Silverlight
    http://windows.microsoft.com/en-GB/w...em-repair-disc

    Windows 7 repair USB, Also Vista if service pack installed
    http://www.intowindows.com/how-to-re...tion-dvd-disc/
    http://www.webupd8.org/2010/10/creat...usb-drive.html
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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