Time machine denying access

Discussion in 'Mac Basics and Help' started by splodger, Jan 29, 2009.

  1. splodger macrumors newbie

    Joined:
    Jan 28, 2009
    #1
    Help, please! Time Machine suddenly won't allow me to use a firewire external hard drive. I get the message: you do not have appropriate access privileges to save file ".001b63a9cdcd" in folder "External" No such file can be found on the computer, even with file extensions revealed.
    Trying to change permission with Get Info doesn't work. I don't want to have to re-format. Is there a fix for this, or a known cause? It seems to have occurred after auto updating.
    Thanks in advance.:confused:
     
  2. kastenbrust macrumors 68030

    kastenbrust

    Joined:
    Dec 26, 2008
    Location:
    North Korea
    #2

    So is this a new external hard drive?

    If so i assume you've formatted it in the HFS+ file format so it can be used with Macs?
     
  3. splodger thread starter macrumors newbie

    Joined:
    Jan 28, 2009
    #3
    Time Machine denying access

    Thanx for the reply.:confused:
    No, not new. Has been in use for some time. Coincidentally, I connected a new firewire drive, which is working, and the old one is not.
     
  4. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #4
    Try opening terminal and typing in:

    sudo chmod 644 /volumes/"TM drive name"/.001b63a9cdcd

    Replace "TM drive name" with the name of your Firewire external.

    You will be prompted to enter your administrator password.

    Apparently the 10.5.6 update wreaks havoc on file permissions for some users.
     
  5. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #5
    Did you repair permissions, or just try to change that one permission?
     
  6. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #6
    If his situation is anything like mine the option to repair permissions on an external F/W HD in Disk Utility is greyed out.

    Others with this issue are reporting that just fixing the permissions on that single file (which Time Machine apparently names based on the machine's MAC address) allows Time Machine to access the drive again.
     
  7. splodger thread starter macrumors newbie

    Joined:
    Jan 28, 2009
    #7
    Time Machine denying access

    Thank you, people.
    Yep, we do have 10.5.6
    Well, I couldn't see a way to repair permissions on an external drive, in Disk Utility. Any tweaking in Get Info was ineffective.
    I must try the terminal thing, but Terminal is a bit intimidating. Is that the only way to locate this strange file that TM won't let me copy?
     
  8. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #8
    I think you'll find the terminal method to be the most effective method. It is not as difficult as it seems. Just fire it up, type in that single command and then enter your password when prompted. Time Machine should instantly be able to start backing up to the drive again.
     
  9. splodger thread starter macrumors newbie

    Joined:
    Jan 28, 2009
    #9
    Time Machine denying access

    Thanks so much SaSaSushi!
    T;)he Terminal thing worked a dream!
    How do you get to know so much?
     
  10. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan

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