Two LaCie firewire hard drives are connected to my iMac G4. After a forced restart, both of them do not show up anymore, neither in System Profiler nor in Disk utility. I have tried restarting, unplugging and replugging, repair permissions ) ), but they do not reappear. When I plug them into the running computer, the external drive starts to spin, but is not mounted. If I turn off the computer, the external drive turns off as well. So they seem to communicate with each other. But not with me. Btw, I'm running the newest version of Tiger. Thank you very much for your help.