I only have 512 mb ram. My present pagefile is in a separate partition, but it's not enough for history files for Photoshop using large graphics. Very slow. But I have 160 gig external hd that I would like to use for pagefile. How do I move present one, or do I just make a new folder on z and name it pagefile and the system will start using it? I would love to upgrade ram, but not possible at the present time.