DougyFrisch
+1y
i've got 10.3 and i don't have any issues when jumping back and forth with my jump drives. And i've also got an external 250 gig HD that's firewire though... If your going to get an external drive go with a firewire, you'll be much happier when you start to transfer large files. only downside is the firewires need to be plugged in to an outlet while the USB's run off of internal power.... also, if your going to be useing photoshop on a mac, ditch that iMac and get a new one