I've just tested my new bootable firewire drive and it worked well. Then just for fun I thought I'd try and use it to boot up a different mac on my ethernet network. I selected 'network' as the startup volume but when it tried to start all I got was a flashing 'World' icon. Then I remembered that OSX can only boot up from a firewire drive, and I was wondering if that means that the firewire drive must be directly connected to the mac. Then I wondered why there is a choice to boot from a network then I thought maybe they mean it has to be a firewire network and not an ethernet network. Is this right.