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After installing Ubuntu 12.04 from a DVD it won't boot. It is installed along side Windows XP. Windows XP boots with no option to boot Ubuntu.

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This indicates that GRUB is not installed in the MBR of your hard drive. The way to remedy this situation is to boot Ubuntu using the recovery boot option of the installer cd. Once the Ubuntu system is running type the following into the terminal:

sudo grub-install /dev/sdX  (where sdX is the drive designation of your boot disk, probably /dev/sda)

Reboot your system without the installer cd, and hopefully everything should work well.

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IF you fail to see the Grub:- Insert a Ubuntu 12.04 Live-CD/DVD and run the following commands:

$sudo mount /dev/sdXY /mnt # XY is the drive, eg. sda or sda1

$sudo mount --bind /dev /mnt/dev

$sudo mount --bind /proc /mnt/proc

$sudo chroot /mnt

$grub-install /dev/sdX#X is drive number


Reboot. Lemme know if it doesn't work as intended.

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