I have 2T WD external drive. I plugged it in today after a two week break, and my Mac does not display it on the desktop, therefore, does not seem to see it. The drive is plugged in, though, seems to be working; I tried firewire and usb. The updater from http://support.wdc.com/product/download.asp?groupid=121&lang=en also doesn't see it, neither with firewire nor usb. It's like the drive is unmounted, can anyone help please?..