The dialog box used to add drives to a new volume is not populated with any drives.
Replication of error:
Boot FreeNAS 8 RC2 amd64. During boot all drives are located according the terminal output.
Enter the webGUI. Press 'Storage' -> 'Add Volume' -> the dialog box to add volume appears. No drives appear under 'Member disks'.
Workaround: none found
Boot is performed from USB-stick, drives connected are a mix of SATA I, SATA II and SATA III - SATA I + II drives via motherboard controller and SATA III drives via an Areca raid card.