1 Reply Latest reply: Nov 26, 2012 8:19 PM by BDAqua
Jerry Harned Level 1 Level 1 (0 points)

I have had my power mac for about 2 years. I use the Firewire 800 port all the time. Tonight 3 devices that I plugged in to it via 3 different cables did not work or show up in the finder. The system profiler said, " Warning: Unable to list Firewire devices".

Mac Pro, Mac OS X (10.6.8)
  • BDAqua Level 10 Level 10 (121,245 points)

    HI Jerry, try this...


    reset FW bus, same goes for USB reset...

    Reset the Firewire bus

    If your Firewire or USB isn't recognizing any device.  A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:

    1. Shut the machine down.

    2. UNPLUG the power lead to the computer and any firewire/USB drive.

    3. leave it for 10 minutes.

    4. Connect back up and reboot.