Skip navigation

FireWire GUID ffffffffffffffff is invalid!

1279 Views 4 Replies Latest reply: Nov 26, 2012 11:51 PM by Graham Perrin RSS
Houwtama2 Calculating status...
Currently Being Moderated
Oct 22, 2012 6:16 AM

Have been getting regular kernal panics since upgrading to 10.7.4. Ran applejack and got the following message:

FireWire GUID ffffffffffffffff is invalid!

Hoping this is my problem. Any advice?

MacBook Pro, Mac OS X (10.7.4)
  • Linc Davis Level 10 Level 10 (107,375 points)
    Currently Being Moderated
    Oct 23, 2012 9:52 AM (in response to Houwtama2)

    Launch the Console application in any of the following ways:


    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)


    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.


    ☞ Open LaunchPad. Click Utilities, then Console in the icon grid.


    Select the most recent panic log under System Diagnostic Reports. Post the entire contents — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

  • Graham Perrin Level 2 Level 2 (240 points)
    Currently Being Moderated
    Nov 25, 2012 12:50 AM (in response to Houwtama2)

    The message from kernel

    FireWire GUID ffffffffffffffff is invalid!

    may be seen sometimes with a problematic device on FireWire, sometimes without a device on that bus.


    In my case I see the message if I allow sleep of both (a) hard disks and (b) the computer (MacBookPro5,2), then wake the computer – with a LaCie hard disk drive, on FireWire, that is known to be problematic. So I don't seek help, this is just an example of an environment where the message may be seen.


    In another person's case (details of which I can not divulge) there's a Thunderbolt interface to a display with a FireWire port, and no device on FireWire.

  • Graham Perrin Level 2 Level 2 (240 points)
    Currently Being Moderated
    Nov 26, 2012 11:51 PM (in response to Houwtama2)

    That's from a .crash file.


    Look instead for the kernel panic reports. In Finder, go to




    – then work with file names that begin with




More Like This

  • Retrieving data ...

Bookmarked By (1)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.