System Booting Off SATA HDD Instead of SCSI

I have a Compaq ML530 G1 with a 5300 array controller with mirrored drives that have Server 2003 installed on them. I have recently installed a PCI SATA controller with a new SATA HDD connected, but now the system attempts to boot off the SATA drive as opposed to the mirrored SCSI HDDs.

I have run the SCU to set the 5300 array controller as the boot device, but the system will continue to look at the SATA HDD. Any thoughts?

re: System Booting Off SATA HDD Instead of SCSI

Who would have thought that moving the SATA controller out of the primary PCI slot would fix the issue....