I have a few questions on installing a second Hard drive in my G4 Mirror drive.

1) I installed a Seagate 320Gb in the Ata 66 bay and I only read it as 298 Gb available. I've reformatted the disk in OS extended. How can I get all 320Gb to show.

2) My original drive is fine, but it's only 80Gb and I want some more room. What would be the best configuration for both hard drives for a Graphic Designer who uses Photoshop and InDesign heavily. I will also be upgrading to Leopard in the near future.