RR? What'* that?
DVD Decryptor? What do you need that for?
. How fast is your DVD-ROM Read Speed? It could be that your DVD-ROM drive and HDD share the same channel. Unless your HDD is SATA [I doubt it is]. You may want to put the DVD Rom Drive on a different channel. If you have two CD-ROM drives, you can put them on the same channel, but put the drive you want to be faster [IE a CD/DVD burner, or whichever had a higher read and/or write speed] as Master. You want to isolate the HDD on it'* own channel, in every possible situation.