I currently have an 80GB Seagate as my primary drive for the OS and apps, and a 120GB for image storage on my PM G4 1.25. I've tried iPhoto Librarian to keep the original images (iPhoto Library) on another drive, but it is really quirky. Since storage is so cheap, I want to buy another 120GB HDD as the main OS and app drive, but how do I go about doing this? Do I just erase the existing 120GB seagate I have in there (I already have everything backed up to external and DVD) and put it in place of the 80GB drive - will the Tiger install DVD now what to do with the drive? Ideas? Am I making sense?