Unable to read undeleted files

Using TestDisk to undelete files
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poicub
Posts: 1
Joined: 27 Jun 2012, 23:15

Unable to read undeleted files

#1 Postby poicub » 27 Jun 2012, 23:42

I have used TestDisk (6.14) to undelete a number of jpg and mov files from a disk image of my SD card. However, as in similar posts, I am unable to open the jpg or mov files.

The SD card (from a Nikon D5100 camera) was originally inserted into a card reader on a Win7 machine which downloaded the mov files but not the jpeg files and deleted all files on the card.

I immediately made two images of the card on my Mac (OS X 10.7.4 - lion), one read only and the other read/write.

I tried using PhotoRec (6.14) on both images, but was unable to recover any files (I searched for jpg, mov, and tif files). I then used TestDisk by which I was seemingly able to recover all the files marked deleted from the image.

The jpg files appear to be the correct size on the disk (approximately 4MB each), but I can not open them in software such as Preview (Mac) or Gimp. The only difference I see is in filenames where normally the camera saves files as DSC_nnnn.JPG and the undeleted files (and in the TestDisk interface) are _SC_nnnn.JPG.

Thank you in advance for any ideas.

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Fiona
Posts: 2839
Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: Unable to read undeleted files

#2 Postby Fiona » 28 Jun 2012, 21:29

Did you create an Image using TestDisk / Advanced / Image Creation?
And did you work with your image like described here;
http://www.cgsecurity.org/wiki/Media_Image

If you delete a file, the first character/letter might be removed from the file.
Would it be possible to have a try to copy all files from your sd card instead?
You shouldn't write anything to your card,
Only to copy your deleted files to another intact destination/partition/disk.
Standard path is your testdisk folder.

Fiona


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