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Time Machine turned itself OFF - why?

975 Views 11 Replies Latest reply: Oct 16, 2008 10:15 AM by Patricia W RSS
Patricia W Level 3 Level 3 (685 points)
Currently Being Moderated
Jan 6, 2008 7:29 AM
I posted this to the wrong forum and am reposting it here ...

I just discovered that Time Machine has not been working for over a month (I looked at the backup drive and that was the date on the most recent folder.) So I looked at my Time Machine preferences and Time Machine was OFF. I'm pretty sure I didn't do that. I wonder whether it could be caused by my external drive being offline when Time Machine attempted to backup. I've had that sort of problem with other software. Instead of waiting until the drive comes online it turns the option off permanently. If that is the case with Time Machine it is pretty scary. It means that I can't rely on Time Machine. Has anyone else had this experience?
(The very least it could do is send me some sort of alert.)
iMac, Mac OS X (10.5.1), 2.4 GHz Intel Core 2 Duo
  • Mr.Lobotomy Level 4 Level 4 (1,295 points)
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    Jan 6, 2008 8:07 AM (in response to Patricia W)
    If your external drive is off, unmounted or disconnected when Time Machine wants to back up, Time Machine simply waits until the drive is mounted to perform its next backup task. This allows laptop users to leave the external hard drive at home while travelling. I have not seen Time Machine turn itself off.
    2GB, 2.4 GHz Core 2 Duo, 15.4" Macbook Pro, Mac OS X (10.5.1)
  • Peggy Lynn Level 4 Level 4 (2,470 points)
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    Jan 6, 2008 1:23 PM (in response to Patricia W)
    Time Machine has never turned itself off if I eject its drive and turn it off. If this happens again you should report as a bug to Feedback.
    http://www.apple.com/macosx/feedback/
    Mac Mini, 1.42 GHz, 1 GB RAM, 80GB HD, SuperDrive, Mac OS X (10.5.1), Maxtor One Touch 160GB, HP LaserJet 1320n, Epson R800
  • Peggy Lynn Level 4 Level 4 (2,470 points)
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    Jan 7, 2008 10:16 AM (in response to Patricia W)
    If any of your preferences change on their own this should be reported to Apple. There is a padlock in the lower left corner of of the window in System Preferences > Time Machine.
    Mac Mini, 1.42 GHz, 1 GB RAM, 80GB HD, SuperDrive, Mac OS X (10.5.1), Maxtor One Touch 160GB, HP LaserJet 1320n, Epson R800
  • Peggy Lynn Level 4 Level 4 (2,470 points)
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    Jan 7, 2008 11:06 AM (in response to Patricia W)
    I don't see any lock in System Preferences [Show All] but I do have one for Time Machine. Where do you see the lock for all System Preferences?
    Mac Mini, 1.42 GHz, 1 GB RAM, 80GB HD, SuperDrive, Mac OS X (10.5.1), Maxtor One Touch 160GB, HP LaserJet 1320n, Epson R800
  • Peggy Lynn Level 4 Level 4 (2,470 points)
    Currently Being Moderated
    Jan 7, 2008 11:46 AM (in response to Patricia W)
    Mine work the same way. I never lock anything in system preferences so I've never noticed before. It would probably be a good idea to leave them unlocked for awhile and keep a sharp eye out to see if Time Machine decides to turn itself off again. It certainly shouldn't be doing any such thing under any circumstances and should be reported as a bug if it does.
    Mac Mini, 1.42 GHz, 1 GB RAM, 80GB HD, SuperDrive, Mac OS X (10.5.1), Maxtor One Touch 160GB, HP LaserJet 1320n, Epson R800
  • nerowolfe Level 6 Level 6 (13,070 points)
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    Jan 7, 2008 12:31 PM (in response to Peggy Lynn)
    It is remote, but some system log might indicate what happened.
    Check all your logs around the last date that TM did a backup and see if anything shows up.
    If it was a system glitch, it may be there.
    Just thinking out loud, but that is why there are logs.
    Dual G5, MacBookPro 15, MacBookPro3,1 17 Core2Duo, Mac OS X (10.5.1), Vista Ultimate 64-bit on MBP/17", homebrew 3GHz PC, Dell Inspiron8k

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