HT201581: Find your Mac's serial number in About This Mac or System Information
Learn about Find your Mac's serial number in About This Mac or System Information
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Helpful answers
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Jul 2, 2012 2:57 AM in response to MAMW01by Barry Hemphill,Hello:
Try forcing Time Machine to do another backup.
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Sep 14, 2012 10:59 AM in response to Barry Hemphillby howardfromsurprise,It won't backup. Just get the same message again
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Sep 14, 2012 11:16 AM in response to MAMW01by howardfromsurprise,I have the same problem. Did you ever solve the problem?