I have ordered a few 2.5" to 3.5" drive adapters along with a pata/sata adapter and want to know if it is possible to install two internal drives in my iMac. I am going to install a 320gb 7200 rpm sata laptop drive and just got to thinking if two drives are possible. The 3.5" 200gb 7200rpm pata drive is starting to sound like a Geiger counter! I'm not sure I really have the need to do this, just curious. I have taken the fan out for cleaning and lubrication and it's very quiet. Next is the loud hdd to be addressed.