I have the same problem with my Mybook Premium 500 gb that I just bought. I did reformat it with Mac os format but it still isn't recognized with Firewire, only with USB.
I have the same problem with my Mybook Premium 500 gb that I just bought. I did reformat it with Mac os format but it still isn't recognized with Firewire, only with USB.
I don't have a solution, but I will elt you know I have the same problems. I have reset pram, repaired permissions, unplugged power and all externals for a half hour - all Apple suggestions - all suggestions from other forums - no good.
Either there are many Intel Macs with bad motherboards or else it is a software bug/conflict.