Results 1 to 5 of 5

Thread: ext. HD - System Profilers says Unable to list FireWire devices

  1. #1

    Luminosity's Avatar
    Member Since
    Oct 09, 2008
    Angry ext. HD - System Profilers says Unable to list FireWire devices
    Ok first off i have to say, i have encountered a very, very strange problem. I have purchased a WD My book Home Edition from eBay 3 days ago. I turned it on and connected it to my imac, via usb and installed all the files. (Wasn't really needed) So then i plug in the fire wire after safely removing the USB part. It doesn't recognize anything. I open Disk utility and nothing is shown for a my book. So i open System profiler to see if it is my firewire drive and it says -
    FireWire Bus:

    Warning: Unable to list FireWire devices.
    Maximum Speed: Up to 800 Mb/sec

    So i thought it was the drive. So i plug it into my Macbook via firewire, and right away it finds the drive. So nothing is wrong with the drive. So i restart my computer and reset the pram, and start it up. Again, nothing. So i came to think is it my firewire slot? So i plug in my camera via firewire, and it picks up right away. So im stuck in a VERY VERY strange frustrating situation and it seems its doing it for no reason.

    Another thing i should add, I also have windows on my imac, so i booted up windows and i plugged in the firewire and again, nothing. But my computer does recognize something is plugged in. I am stuck.

    Please if anyone here has any suggestions dont hesitate to help me!

  2. #2
    FW 400 or 800?

  3. #3

    Member Since
    Jan 28, 2007
    does it work ok with USB connection? I had a similar problem with a WD drive and just started using the USB.

  4. #4

    Luminosity's Avatar
    Member Since
    Oct 09, 2008
    Yea the usb works perfect. Thats what its hooked with right now. The thing i dont understand is if i plug it in doing the following:
    Unplug HDD power, unplug firewire, then connect power, connect firewire, it will show up as My book and then disappear. Im so confused.

  5. #5

    Member Since
    Oct 26, 2009
    i am having the same problem on my new imac. anyone else?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. firewire or USB ext HD?
    By jaguarMac in forum Apple Notebooks
    Replies: 8
    Last Post: 08-02-2015, 01:19 AM
  2. Finder Refuses To List Devices
    By LeslieT in forum macOS - Operating System
    Replies: 3
    Last Post: 08-02-2010, 01:31 PM
  3. System slow down when devices are connected to Firewire ports
    By sammyblanks in forum Apple Desktops
    Replies: 1
    Last Post: 10-23-2009, 05:22 PM
  4. iphone not in devices list
    By wfolse1 in forum iPhone Hardware and Accessories
    Replies: 3
    Last Post: 01-30-2008, 12:36 AM
  5. Itunes+USB devices in source list?
    By indykid in forum macOS - Apps and Games
    Replies: 4
    Last Post: 06-09-2005, 07:33 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts