I've used IMGBurn for a few months, using only DVD+R DL media. I am burning smaller files now, and am using DVD-R media. My drive is capable of burning DVD-Rs, but when I go to change the booktype under the "samsung," tab, the only displayed types are DVD+R, DVD+RW, and DVD+R DL. No DVD-R is displayed. I don't understand why this is, because my driver is fully capable of burning that media. Can anybody help me out here?