Letty, If you pick the MDS file to burn with IMGburn then all will be well as the MDS file contains the layerbreak info for your DL disc. The reason for the failed verify is most likely because that Memorex blank is dye type CMC MAG........ utter crap. Honestly mate, buy a verbatim DL blank and do the burn again, you will verify this time, 99.99999% for sure. Your burner couldn't read back the info it just burn't to the blank disc hence the verify failed message. As for the burn being readable, maybe, but guaranteed in about 6 months, it won't be because of the degradation of the cheaper memorex disc. We always reccommend Verbatim dual layers to burn to, there're the only ones that work proper......