I have looked everywhere for a fix but 2 days and no luck. I recently purchased a Seagate 2 TB firecuda 3.5 HDD/ SSD hybrid, and tried to install it along side my old 1 TB barracuda. However, the HDD will spin up, but not get recognized by anything on my PC. I have tried new cables, even switching the power and data cables used on my working HDD with the cables on the Firecuda, proving that the both sets of cables work on the prior and neither work on the latter. I have tried everything, even resetting bios! plz help!