How would I go about trying multiple android os's on one sd card? I have currently one running good however would like to try a new one with out losing all my current settings in the first os. I tried renaming the folder from android to something else and making a new android folder at the root of the sd however when I put the new android build in the new folder it just hangs forever like 15 minutes and does nothing. Is there something I am doing wrong? If someone has away of doing this I would greatly appreciate pointing me in the right direction 
