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Applies to both the Option ROM and driver. It's more than likely that your 4TB HDD's are Advanced Format (AF / 512e).
The Q965 chipset on your motherboard is linked to an ICH8DO, which has no support for '2–256 TB volume support (data volumes only)'.
This message was posted on behalf of Intel Corporation1 of 1 people found this helpful
Great information found by Gize2, this is actually statement #2, the ICH8DO controller limits 2TB volume size.
This is not a problem, this is a limitation of the chipset.