What happens when you see partition related errors with cciss disks?
Under some circumstances it has been observed that cciss disks can get into a state such that parted, the partition editor, reports unexpected errors. The results can be anything from the autoinstall script failing OR it succeeding but the resultant system failing to boot completely. At least one known cause of this has been the editing of the partition table with Disk Druid on RedHat systems during installation. If this occurs, one known solution that has worked is to use the SmartArray configuration tool which is invoked during system boot. Using this tool, one should delete and recreate the disks.