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I just tried to update my 10.7 (Lion) 2010 MacBook Air to Mavericks but it's now freezing after it restarts (done that twice yet).

When I hard reboot the computer, it just starts the installation again and freezes at the end - sometimes showing it encountered a problem.

What should I do?

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    Can you kindly post the error message you received?
    – Manav Kataria
    Oct 23, 2013 at 4:20

4 Answers 4

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You should wait longer. The installation process isn't complete.

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  • You mean wait even though the installation program tells me it encountered a problem and my mac is obviously frozen ?
    – John Thillaye
    Oct 23, 2013 at 0:58
  • @JohnThillaye If the installation program specifies a problem then it would be wise to specify this in the question.
    – Manav Kataria
    Oct 23, 2013 at 1:04
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    Long wait, but waiting is the right move.
    – commonhare
    Oct 23, 2013 at 5:32
  • I tried a fourth time and let my computer working alone for a couple of hours, dunno if it froze or not but in the end it worked !
    – John Thillaye
    Oct 23, 2013 at 5:47
  • @JohnThillaye Good to know! :)
    – Manav Kataria
    Oct 23, 2013 at 8:20
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Macbook Air 2013 i7 500GB SSD OS X 10.8 When it said 'less than one minute' it was in fact 7 minutes. Conclusion: you probably have to wait for quite a long time. Progress monitor is flaky.

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Just installed Maverick on iMac 27" late 2011 version. Freezed at start. Rebooted 3 times, still freezed. Unplugged power cable and pressed power for 3 sec. Came back ok!

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No solution, but one useless attempt that you needn't waste your time on.

I installed Mavricks on three computers without problem, then experienced the same issue installing that others have encountered, and the same freezing - or glacial progress in booting up- that makes my ca. 2011 iMac useless.

I ran Diskwarrior from the CD, rebuilt the directory, checked all folders, ran the hardware test. Everything was apparently fine... but the problems remain. Try something else.

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