My motherboard suddenly died, but it was an old machine(running natty). So I put together a new Ubuntu system with a clean 14.04 install (same username) and mounted the old drive (with the full filesystem) as secondary device.
I could just rsync the home dir from the old drive to the new.
Should I skip hidden files and dirs? Or reinstall software and then paste config data (hidden files and folders) from the old drive on top of the clean installs?