I went through the howto here; http://www.howtoforge.com/native-zfs-on-ubuntu. I couldn't get it to work. I'm a newb at this stuff (gray haired in real life). I'd like to try some other approaches but I'd first like to undo the steps in the above howto. I tried deleting the folders but it isn't allowed even as sudo. They must be running. What steps would I have to take to remove all the programs installed by the above howto?