Hello!
I have been using Testdisk/Photorec for over a year now and it has really given me excellent results.
However, I have no advanced knowledge of programming or scripting, and I can't recover files with the extension "DM_26".
I would be eternally grateful to whoever provides me with a file/command line/script to add this extension to Photorec, or tells me in an easy way how to do it, since I can't really grasp what the tutorial explains.
Please feel free to inspect both files, Merry Christmas to all.
https://drive.google.com/file/d/1Fp3RPN ... sp=sharing
https://drive.google.com/file/d/1utkC74 ... sp=sharing
Adding DM_26 file format to custom signature
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When asking for technical support:
- Search for posts on the same topic before posting a new question.
- Give clear, specific information in the title of your post.
- Include as many details as you can, MOST POSTS WILL GET ONLY ONE OR TWO ANSWERS.
- Post a follow up with a "Thank you" or "This worked!"
- When you learn something, use that knowledge to HELP ANOTHER USER LATER.
Before posting, please read https://www.cgsecurity.org/testdisk.pdf
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recuperation
- Posts: 2729
- Joined: 04 Jan 2019, 09:48
- Location: Hannover, Deutschland (Germany, Allemagne)
Re: Adding DM_26 file format to custom signature
I don't know the file format "dm_26".
I would have expected you to provide documentation on that format.
You can build yourself a signature file for "dm_26". You look at a couple of samples, not just two, at least three with a hex editor and try to find out which part of the file never changes. That is called fingerprint - you find the least common denominator file-wise.
Without a technical spec of the file format the job is guessing and trying.
With documented formats like JPEG you can read what the fingerprint has to be.
With undocumented formats you have to do trial and error.
The more specific the fingerprint is the less you get false positives but you might miss a real positive one.
If you are less specific you get more false positives but you won't miss a positive one.
That is comparable to Covid testing: A few real infections hidden under a wave of positive test results as the testing only applies to one or two parts of the virus which does not automatically imply that a fully functional virus is present.
I would have expected you to provide documentation on that format.
You can build yourself a signature file for "dm_26". You look at a couple of samples, not just two, at least three with a hex editor and try to find out which part of the file never changes. That is called fingerprint - you find the least common denominator file-wise.
Without a technical spec of the file format the job is guessing and trying.
With documented formats like JPEG you can read what the fingerprint has to be.
With undocumented formats you have to do trial and error.
The more specific the fingerprint is the less you get false positives but you might miss a real positive one.
If you are less specific you get more false positives but you won't miss a positive one.
That is comparable to Covid testing: A few real infections hidden under a wave of positive test results as the testing only applies to one or two parts of the virus which does not automatically imply that a fully functional virus is present.
Re: Adding DM_26 file format to custom signature
Thank you I'll give it a tryrecuperation wrote: ↑22 Dec 2020, 23:56 I don't know the file format "dm_26".
I would have expected you to provide documentation on that format.
You can build yourself a signature file for "dm_26". You look at a couple of samples, not just two, at least three with a hex editor and try to find out which part of the file never changes. That is called fingerprint - you find the least common denominator file-wise.
Without a technical spec of the file format the job is guessing and trying.
With documented formats like JPEG you can read what the fingerprint has to be.
With undocumented formats you have to do trial and error.
The more specific the fingerprint is the less you get false positives but you might miss a real positive one.
If you are less specific you get more false positives but you won't miss a positive one.
That is comparable to Covid testing: A few real infections hidden under a wave of positive test results as the testing only applies to one or two parts of the virus which does not automatically imply that a fully functional virus is present.