My brother wants to get windows 7 64 bit alongside his Windows 7 32 bit. How can I install/modify Grub onto his computer in order to create easy boot options without having to install a Linux Distribution. I know this isn't really a Linux question and I’m sorry about the off topic, but this website will probably give me the best answers to grub.
closed as off topic by Jorge Castro, fossfreedom♦ Nov 11 '12 at 20:49
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Windows has its own bootloader that will allow you to choose between installed versions of windows running on different partitions.