[QUOTE=Terramex;2788352]Which motherboard do you have ?
Which ports are the drives connected to ?
What’s the SATA transfer mode setting in BIOS/UEFI ?
If nothing helps you maybe want to have a look at QPxTool - if it works with your drives.[/QUOTE]
If you search the forum you will find other similar posts, so I am not the only one with this problem. I don’t think it is motherboard specific, but in any case I am using a Gigabyte Z97 motherboard. The optical drives are installed on ports 2 and 3 (an SDD and a HDD are installed on ports 0 and 1). Moving the optical drives to different ports does not help. I can not find a SATA transfer mode setting in the bios and I am using AHCI. I believe QPxTool is for Linux and not Windows.