[RAID] Setting HW raid in Centos Installation

When trying to install Centos using a hardware raid controller

Step-by-step guide

Find the driver files for the Raid controller from the manufacturer website
extract files for the correct version of Centos you are installing and mount/move them to an external drive
load the installer media for centos, edit the command line of the installer and add " dd " to the end of the line
after the initial boot, select the drive that has the controller driver, and add the driver to the installer
Continue the installer as normal, the drives should now be visible as a storage source.