[ubuntu] How to install triple boot Windows 7/8/ubuntu x64

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http://ubuntuforums.org – I have Windows 7 and 8 installed on different HDDs and am using Windows 7 boot loader. I have made a new partition on the same HDD as Windows 7 for installing Ubuntu. Is it possible to triple boot with Ubuntu using the Windows 7 boot loader, and how would I go about doing this? I see during the Ubuntu installation there is an option for selecting your partition, but I am confused to the other options and really don't know what I'm doing. Not sure what to select for boot loader installation nor what mount point is for. Thank you. (Hardware)