I recently purchased a Firewire Bridge board (small circuit board) that can support two IDE drives, one master and one slave--very common. When I connect the two drive to my G5 (running Tiger 10.4), it only sees one drive--the master. If the master is removed, then the iMac can see the slave drive. If the master is reconnected, then it can only see the master. When the board is connected to an IBM compatible PC, it can see both drives so the bridge board is working. Does anyone know if this "one drive limit" is part of the Firewire implementation on the iMAC, or it is a limitation of the operating system? Thanks for any information!