I have a pc with two hard drives both of which have XP. Replaced my DVD burner with a SONY Dual Layer burner and purchased software that would work with same - Sonic v7.21~ The burner works perfect while in C: but when I attempt same with D: I get a message that at least one drive must be enabled for Sonic to work. I checked Device Manager while in both drives and and the drives and controllers are enabled. Any suggestions. Thanks.