Unfortunately the “help” I received from WD tech support was none at all. The tech suggested checking the Boot ROM version of my MacPro, which I think was phased out w/ PowerPC based units.
There could be some type of corruption with your Disk Utility app. If you boot using cmd-r you can use the disk utility app from the restoration partition and then you can erase, partition, or RAID to your hearts content. You can also copy the disk utility app to your startup disk from there as well.
