Anyone have a utility to recover Corrupted PEF files?
P. J. Alling
webstertwentysix at gmail.com
Wed Oct 7 01:08:45 EDT 2009
Forgot about the /c switch. I'll have to try that.
Paul Sorenson wrote:
> Have you tried copying from the command line? Try using xcopy with
> the /c switch. That should copy the file(s) regardless of errors.
> P. J. Alling wrote:
>> Been there done that. The file recovered has the same read problem.
>> I don't know if it's got the CRC failure because I simply deleted the
>> recovery directory when image I wanted to work with failed in the
>> same way when trying to open it with the raw converter.. I've got
>> five Ultra II extreme cards two 4gb and three 2gb cards, I'm not sure
>> which card these came from so this will become a bit of a project...
>> Graydon wrote:
>>> On Tue, Oct 06, 2009 at 11:21:20PM -0400, P. J. Alling scripsit:
>>>> This is absolutely weird. I can view it in Pentax Photo browser,
>>>> with Ifranview or as a thumbnail using the Windows PEF Codec. I
>>>> get a CRC failure when I attempt to copy the files. I haven't seen
>>>> a file fail with CRC failure for years. Especially one that can
>>>> be read by /any/ program at all. I've run a file structure and
>>>> hardware diagnostic on the drive and there are no reported
>>>> problems. So I have data files that cannot be backed up with the
>>>> standard copy utility.
>>> You probably don't have a complete file; all of those viewers are going
>>> to pull the embedded thumbnail (usually one camera LCD sized, plus one
>>> full sized), and it comes before the actual raw data in the file.
>>> Sounds like you've got a bad sector on the card, which is a bad sign
>>> the card, and probably means a chunk of the raw data is gone if the
>>> operation fails.
>>> You might want to run disk recover tools on the card and see what that
>>> gets you. Flash memory should fail to read-only and the data may still
>>> be there, and the problem is that the copy operation can't update some
>>> aspect of the file meta-data.
>>> -- Graydon
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