i have a hp comp with a dvd+rw/cd-rw drive. ive used the hp dvd+r that came with the comp when i bought it but i canceled the writing process, thus making the dvd+r usless (i know im an idiot). i understand from your link that dvd+r's are one time use only, but i also bought dvd+r from tdk and they wont even get recognized by the writer. i dont get whats wrong because the hp dvd+r worked but the tdk dvd+r wouldnt.