How To Restore Grub in Ubuntu 9.10 Karmic Koala
By on January 18th, 2010

A common problem many users face after installing either Linux or Windows on a system when the other is already present is an override of the default boootloader. Without a bootloader, the system is clueless about where to get boot data from. In such a case, you can try these simple steps to restore your grub menu with all the Operating Systems present in the list.


  • Boot from Ubuntu 9.10 or any Ubuntu 9.10 derivative live CD ( the CD from which you installed Ubuntu).

  • After the boot is complete, press alt+F2 to open a terminal.

  • Enter the command fdisk as
    sudo fdisk -l
    This lists all the partitions as shown.

  • Mount the drive marked as Linux under System ( the last column) using the command
    sudo mount “device” /mnt
    fdisk
    Replace “path” with the corresponding device ID under the Device Boot section. So, for the given screen-shot,
    my command will be
    sudo mount /dev/sda12 /mnt

  • After the mount is successful,  install grub with the command
    sudo grub-install –root-directory=/mnt “path”

  • Unmount the drive with
    sudo unmount /mnt


Now, restart your system. Your grub will be restored with both Windows and Linux in the menu.

Author: Chinmoy Kanjilal Google Profile for Chinmoy Kanjilal
Chinmoy Kanjilal is a FOSS enthusiast and evangelist. He is passionate about Android. Security exploits turn him on and he loves to tinker with computer networks. He rants occasionally at Techarraz.com. You can connect with him on Twitter @ckandroid.

Chinmoy Kanjilal has written and can be contacted at chinmoy@techie-buzz.com.

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