When the SATA is configured as RAID mode in the BIOS, there should be an option to remove CTRL+i when booting up because guest users might play around with this and accidently or deliverately change the RAID configuration and causes to delete the whole OS. It will be a lot work to reinstall the whole OS again.
Corsair Vengeance 8GB (2x4GB) DDR3 2133MHz CMZ8GX3M2A2133C11R
OCZ ModXStream Pro 700W PSU
EVGA GeForce GTX 680 SC Signature2/Dual Fan/2048MB (02G-P4-2687-KR)
OCZ synapse 64GB for cache
I understand that you will like to have an option to disable the option ROM once you created an array so that other computer users may not change the configuration.
I will send your feedback up so that it is taken in to consideration for newer BIOS releases.