Installing Ubuntu 13.10

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Bootloader Failures

Occasionally, the bootloader fails to appear after an installation, or you can boot only one system. Loading Windows after installing Ubuntu leads to a bootloader failure. Refer to the "Revival" box for commands you will want to enter in a terminal window. These commands install the Grub 2 bootloader with help from a Live system so that Grub correctly identifies all systems.


To revive an installed Ubuntu, boot up Live mode on the DVD in this issue by choosing the Try Ubuntu without installing option. Be sure that the Live and installed versions are the same architecture. Then, invoke a terminal and execute the following commands. For /dev/sda6 , substitute the specific partition in which the root directory (/ ) of the installed Ubuntu is located.

$ sudo mount /dev/sda6 /mnt
$ sudo mount -o bind /dev /mnt/dev
$ sudo mount -o bind /sys /mnt/sys
$ sudo mount -t proc /proc /mnt/proc
$ sudo chroot /mnt
$ grub-mkconfig -o /boot/grub/grub.cfg
$ update-grub2
$ grub-install /dev/sda
$ exit
$ sudo reboot

Use the chroot command (change root) to mount the installed system into your Live system and work with it as if you had booted it. Now you can set up a new GRUB2.

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