Which manufacturer's media products have been tested for successful operation with the DRU110A?
CD-R: Sony, Ricoh, Taiyo Yuden, Mitsui Chemicals, Mitsubishi Chemical, Maxell
CD-RW: Sony, Ricoh, Mitsubishi Chemical High Speed: Sony, Ricoh, Mitsubishi Chemical
DVD+RW: Sony, Ricoh, Mitsubishi Chemical (not all Mitsubishi Chemical/Verbatim media is compatible with DRU110A drive at this time)
Even when you use tested media, writing may fail because the medium's manufacturer has changed the material it uses or because of some other reason. In such case, try another type of tested media.