Hello forum, I've just bought a new LG Optimus One a week ago, it's now my first Android and smartphone ever. it's an awesome phone and i've also downloaded a number of apps. Really enjoying it. But a few days ago I wanted to change the stock 2gb SD(which always works) to a traxdata 4gb HC sd card (from my Nokia x3, it works on it). It wouldn't work on my LG. So i formatted it (FAT32>FAT) + deleted all the files on it, I ran checkdisk and tried to repair the problems. No avail. Then i put all the files from the 2gb card to the 4gb one (using nokia and PC)(The android files). Still not working. On the notification bar it says: "SD-card removed. please insert a new card". So i went to settings>SD-card and phones memory>SD card, and saw the Mount SD card and format SD-card selections are gray and cant be clicked. I've ran out options and have read hundreds of posts still not finding any solution.