Recording capacity per layer is detected from a disc and bit allocation of wobble addresses in a conventional optical disc and bit allocation in a high-density optical disc are controlled selectively to detect physical position addresses on the disc. The disconnect arrangement includes a contactor or other disconnect device connected in series between each inverter output of the variable speed drive and its corresponding motor. The association of SKU and UPC data at a network level also provides consumers with the ability to analyze their own purchase data for a variety of purposes, including analyses relating to the consumer’s spending behaviors or patterns for example. The transformed indication is then used to decide that the potential reportable problem should not be reported.