The original HD in my iMac G5 running Leopard is getting very full. I want to replace it with a Seagate 3.5 1T drive. The documentation for the Seagate said it came complete with a software program called Disk Wizard that would clone the HD and make replacement a snap. The fine print, however, says DW is not Mac compatible. Can anyone suggest a suitable software program which i can use to clone my old drive? I use Time Machine on an external drive but I'm not sure it has everything I need.