Depending on make and model of your mobo...you should be able to download the AHCI driver
and install it and then enable it in the BIOS. This will allow you to use the larger drives. Now the bad part. If it's not enabled, and you enable in the BIOS and restart this will cause a BSOD. The only way to overcome this is to reinstall the OS once the driver is enabled. The AHCI driver has to be installed and enabled before the OS is installed. Why, I don't know...it's just how it is.