Ok I would like to have multiple roms to switch between. The problem is that the ones that I like require partition the sdcard, and wipe. I want to know how to keep some ready for a fast change. I thought about keeping another sdcard on hand with another rom on it. would that even work? I have done a lot of reading, but it is one of those things that isn't described in detail. If I used another sdcard how big should it be? I have a 4g extra card, I don't save too much stuff on my phone. I back up photos on my computer, and run on the lean side. No excess apps. Just a few questions need some help to find answers.