CD/DVD ROM Not recognized after adding Hard Drive

[MikeSanchez]

Question that I hope you can help me with.
System: Cyberpower PC, I7-2600K, 16GB, Motherboard(MB) Gigabyte P67A-UD4-B3,
CD: 24X Double Layer Dual Format DVD+-R/+-RW + CD-R/RW Drive
Windows 8.1 PRO, Fast machine working great!!! Until...

MB has 4 Sata-2 ports and 2 Sata-3 Ports. Pay attention please.
The CD/DVD/ROM had a blue cable and was installed in a Sata 3 port.
The other Sata-3 port has a HD in it. Both S3 ports occupied.
However, I just purchased a 3TB 6GBs Sata 3 HD, which needs the port.

So I switched the port for the CD/DVD/ROM to a Sata-2 port and used a black sata cable which is compatible. The CD/DVD/ROM works fine on the Sata-2 port.

HOWEVER, when i connect the new drive to the now available Sata 3 port, The drive is recognized, but the CD/DVD/ROM is not. Like the CD/DVD/ROM is not there, its not accessible.

How can I get the CDROM it to be recognized?
What did I do wrong?

 

[MrTuRtLe03]

Check in your BIOS to see if the Optical drive is showing up or not. If it is then it is most likely a driver problem or other software issue with Windows. If it does not show up in your BIOS then you need to check the connections from the Motherboard to the Optical dive and power going to the Optical drive. Do that first and let me know what you come up with! Thanks!

 

[MikeSanchez]

Well checking the BIOS did help as you suggested. I had checked the BIOS earlier and the ROM did show up.
It turns out that I connected the ROM to a Sata-2 port which was designated a SLAVE.
Fortunately there is another Sata-2 port available that is designated a MASTER, which now the drive is accessible.

The weird things is, it worked as long as the HD was not connected on the Sata-3 connection.
Once I connected the HD, then it did not show up.

Also, I did not see an option in the BIOS of changing the Sata-2 port from SLAVE to MASTER and I am not using any jumpers on the drives.
Would you know how to make the port a MASTER?

Thank you for the HELP!!!!

 

[MrTuRtLe03]

The only thing I could think of would be in the BIOS or pins on the drive - possibly another port. If those will not work it might be something you can not change.