Resizing root

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http://crunchbanglinux.org – So I have Staler installed to my laptop with a 20GB HD, currently with an even split between home and root in ext4. As I see I only use 1.8GB of my root, I'd like to shrink it down and extend home. My questions:Is 3GB too small?Is this risky in regard to system stability or data loss? I have nothing valuable on there and I don't mind reinstalling, I am just wondering if anyone had any experience with this. What is the smallest root partition you can get away with? (HowTos)