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I have Ubuntu and Windows 7 each on its own partition. When I switch on the computer, I do not get the option of switching to Ubuntu. Windows 7 starts automatically.

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up vote 2 down vote accepted

You need to restore the GRUB bootloader. The Ubuntu Community site has a comprehensive set of instructions on this: Recovering Ubuntu After Installing Windows

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Here are some slightly more verbose instructions on how to repair grub.

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Grub is a dual boot loader that you can install on the system, this will then give you the option to dual boot each OS.

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It looks like your GRUB bootloader is no longer set as the default bootloader... follow the steps below.

Boot with a live cd that has grub. Issue this: su grub (enter) root (hd0,?) (? being where your original grub is) setup (hd0) quite


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