[ubuntu] Help Configuring Grub 12.10

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http://ubuntuforums.org – I usually Dual boot with 2 separate Hard Drive tot have a backup just in case. Well apparently a clean install of Ubuntu 12.10 just happened to hit the exact thing. It seems the Ubuntu installer picked the Window 7 Hard Drive to install Grub, but sent everything else to the assigned hard-drive. So now I lost Grub on the Ubuntu Hard drive, and the Window 7 bootloader was replaced with Grub (the exact thing I wanted to avoid). Is it possible to fix Grub within the Ubuntu Hard Drive? I am not very experienced with Grub, so I am hoping I can fix this without having to Boot into the Live USB (Hardware)