[all variants] want to install various distros side by side, but ultimately keep only one

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http://ubuntuforums.org – Dear popular community of Ubuntu, Hello. I plan on installing several Linux distributions on my computer that has Windows 7. But I don't plan on keeping all Linux distros forever. I plan on keeping just one Linux distro (and keep the Windows 7 OS). I'm leaning towards Ubuntu, but I'll have to see whether problems arise or not. What's the best, newbie-friendly way of doing this? Here's what Gparted on a Live USB shows: http://ubuntuforums.org/attachment.p...1&d=1350447634 /dev/sda1 and /dev/sda2 are Windows7 sda3 is Windows Recovery Environment sda5 is a Linux distro that's i (Hardware)