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My hard drive had some bad sectors recently, so I backed up, re-formatted, and clean installed Mavericks.

Everything seemed to work fine until couple days ago when I tried to look at some photos I recently imported to iPhoto, things got stuck and sometimes wouldn't move at all for up to 40 seconds, I knew it was a hard drive issue.

I tried to use the os x disk util to verify and repair disk but it all came up green.

when I try to run time machine it transfers REALLY REALLY SLOW and than gets stuck and says backup failed.

what should I do?

  • I bet on "Disk I/O errors" in Console.app – Matthieu Riegler Feb 27 '14 at 8:41
  • yeah i do see a lot of disk i/o errors. problem is how do i recover my data? i can still boot and use it but i wan to keep all my files. is there any programs like spinrite for mac that keeps reading till it finds something so i can recover and replace drive? – user71603 Feb 27 '14 at 9:38
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    You won't be able to backup all your files. You can't retrieve the data stored on the dead sectors. – Matthieu Riegler Feb 27 '14 at 12:08
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I had the same problem as you few years ago.

You definitely have the sympthoms of bad sectors. If you can't backup with Time Machine I advise you to back your data from the finder by yourself and skipping the files that can't be read.


Edit : You won't be able to backup all your files. You can't retrieve the data stored on the dead sectors.

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Open Console in your Utility folder.

Type "disk" in the search (Filter) window

Look if you have disk I/O errors.

If you do see them (like a lots of them), your disk is bad, so back up, and get new disk.

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