Hello. I am new here and this is my first post. last year I installed cm7 on my sd card for my nook color. it worked pretty well but then started to get really sluggish and then finally when I tried to turn it on one day it would load to the cm robot and hang. I have decided I want to reinstall an upgrade to at least cm9.n I have an image writer and when I try to reflash the sd it gives me an error. I have tried reformatting the sd card on a windows machine to fat32. now the card just keeps doing the same thing except cm7 isnt installed anymore.I am using ubuntu 12.10 and would really rather do this with that os as I am trying to stay away from windows. So I guess my question is is there a walk through to install cm9 on my sd card while using ubuntu and is there anything I need to do to the card. Thank you in advance.