Hi. I recently installed a new 250 GB WD internal hard drive in my Dual 1.25 GHz, G4 Mirror Door. I'm not sure what the next step to using it is. When I restarted my computer it said it "could not read" the new drive and asked me if I wanted to initialize.... The new hard drive shows up in Disk Utility and in "About this Mac" but I can't find it like I can my start-up disk. Are there steps I need to take in order to start using this new hard drive? Initializing, partitioning, etc...?