Incorrect Disk Partition - New Install SCO 6.0

New IBM x3400 machine with a raid 5 configuration. Go through the early setup routine to the point where I answer the questions for time zone, machine name. Enter continue and get a message stating :
"Incorrect disk partitioning cannot continue" This is a sco message, refers to the installation guide. There is no information there. I also checked SCO online and have found no reference to this message. Has anyone encountered this problem and have been able to resolve it.

If you have SATA RAID, it is not supported.
Your only option is to set the drives to enhanced mode in the CMOS,
install SCO 6 on the primary drive, and then buy the Veritas ODM product (from SCO) to use software RAID.