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I had Ubuntu in one partition and Vista in another.

The Ubuntu boot manager would come up and ask me if I wanted Ubuntu or Vista.

After installing Windows 7 over Vista, upon booting there is no sign of Ubuntu.

Is there a way I can log into Ubuntu some how in its partition and set up the Ubuntu boot manager again so that when I boot the machine it asks me if I want to use Windows 7 or Ubuntu?

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up vote 5 down vote accepted

The HowToGeek explains how to reinstall the Grub Bootloader after a Windows install wipes it out.

There's also Super Grub Disk if those steps aren't working for you.

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