My raid HD cannot be detected

[Guest]

Hello,

 

[jaquith]

Hello!

Typically, RAID requires to BIOS changes: 1. The SATA controller needs to be set to RAID, 2. Ctr-I @ boot the Configure the RAID, also the correct drivers must be installed.

Need a lot more info {Model & Part-Numbers}:
MOBO
HDD/HHD/SSD
Ports
OS