I'm looking to ensure I've truly recovered all remaining data from a PowerMac G4 early 2001 with twin 400GB hard drives plus the OEM one that I think is something like 120GB, 1.2GHz upgraded processor, 1.5GB RAM that I've not used in several years. Any precautions I should take? And does this machine still serve any purpose other than recycling? System has Leopard installed.