I have an external NTFS drive from which I was trying to copy some files to my macbook pro 10.6.6.

I was getting error 36 so with disk utility I clicked on Repair Disk. Now all my data is gone!

What gives and how can I fix it?

By the way I was using Paragon NTFS as well.

Part of the log:

2011-02-12 16:32:56 +0100: $UpCase file is formatted for use in Windows NT/2K/XP
2011-02-12 16:32:56 +0100: Verifying 95756 folders ...
2011-02-12 16:32:57 +0100: Deleting entry "._501" from index 0x1b ".Trashes"
2011-02-12 16:33:30 +0100: Correcting error in index 0x30 ($I30) for file 0x1746d.
2011-02-12 16:36:57 +0100: Creating root directory
2011-02-12 16:36:59 +0100: Inserting empty data to files.
2011-02-12 16:37:00 +0100: Verifying files security...
2011-02-12 16:38:50 +0100: Correcting $MFT bitmap data.
2011-02-12 16:38:51 +0100: Correcting $Bitmap data attribute.
2011-02-12 16:38:53 +0100: 94.88 Gb in 569134 files
2011-02-12 16:38:53 +0100: 111716 Kb in 95758 directories
2011-02-12 16:38:53 +0100: 0 Kb in bad blocks in 0 fragments
2011-02-12 16:38:53 +0100: 125388 Kb in use by the system
2011-02-12 16:38:53 +0100: 4096 Kb occupied by the log file
2011-02-12 16:38:53 +0100: 4096 bytes in each allocation unit
2011-02-12 16:38:53 +0100: 61049000 total allocation units on volume
2011-02-12 16:38:53 +0100: 31304981 allocation units available on volume
2011-02-12 16:38:53 +0100: The volume /dev/disk1s1 has been repaired successfully.
2011-02-12 16:38:53 +0100: 2011-02-12 16:38:57 +0100: Volume repair complete.2011-02-12 16:38:57 +0100: Updating boot support partitions for the volume as required.2011-02-12 16:38:57 +0100: Repair tool completed: 2011-02-12 16:38:57 +0100: 2011-02-12 16:38:57 +0100:


Try plugging your drive into different computers (Mac and PC). If you don't see anything, you will probably have to send it to a data recovery service if you don't have a backup.
You can also try software to recover data, like DiskWarrior.

As for why DU erased this when you clicked Repair, I have no idea. Are you sure you didn't click Erase, Reformat, or Repartition?

  • No, I didn't click on erase, I have the log form disk utility. – Ayrad Feb 12 '11 at 16:23

I had the same problem, and I resolved it with the chkdsk.exe on Windows. The drive mounted and I was able to recover my files.

  • 1
    Welcome to Ask Different! Could you add some detail to this answer? Where is chkdsk.exe found and how is it used? Since this is a Mac-centric site, maybe you could recommend a way to use chkdsk without access to a Windows computer? Please take a look at the FAQs for more info. Thanks. – Nathan Greenstein Apr 26 '12 at 3:57

Highly recommend Get Data's Recover My Files program. You can scan for lost files for free but must pay to save them. However, it's a LOT cheaper than paying for professional recovery service.


Get the hard-drive into an external enclosure. Preferably something with a fast interface, like FW800. Image the drive.

Then get yourself some data rescue software (I like Data Rescue 3 -- but there are many out there), and run your recovery software on the image.

Worst case scenario is you send the hard-drive (that you've manipulated very little since you've been operating from a disk image) to a recovery centre.

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