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 Post subject: repair corrupted docs and pdfs
PostPosted: October 7th, 2018, 4:17 
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Joined: October 7th, 2018, 3:22
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Location: melbourne
this post a bit out of topic but i need to know how can i repair corrupted files listed in the title? i saw the files sizes are intact but the files cannot be opened with different apps. good suggestion needed.
the files are recovered from a failed toshiba hdd in a dell inspiron laptop. thxs in advance all good bros and sis.


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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 7th, 2018, 4:28 
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Joined: September 16th, 2015, 9:06
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Location: Poland
Post a sample here.

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 7th, 2018, 4:40 
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Joined: December 19th, 2006, 8:49
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berifarni wrote:
(...)files are recovered from a failed toshiba hdd in a dell inspiron laptop. .


- What was the initial problem of the drive ?

- How did you recover it / the data ?

- Was there any encryption ?

- Did you try to open the files with hex-editor to see the content ?

- Was the system affected by some sort of Virus/Malware/Ransomware ?

- Did you manipulate firmware on the drive with firmware tool like clearing G-List or .... etc etc ....

- Did you use software only sollutions / logic recovery and what software did you use (R-Studio, GetDataBack, etc ...) ?

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 7th, 2018, 5:50 
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Joined: October 7th, 2018, 3:22
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Location: melbourne
thxs all,

the sample pdf file is enclosed.

- What was the initial problem of the drive ? bad sectors, ddrescue found over few hundred GB of bad sectors.

- How did you recover it / the data ? ddrescue

- Was there any encryption ? no.

- Did you try to open the files with hex-editor to see the content ? no, i did not use hex editor.

- Was the system affected by some sort of Virus/Malware/Ransomware ? no.

- Did you manipulate firmware on the drive with firmware tool like clearing G-List or .... etc etc .... no clearing of g-list.

- Did you use software only sollutions / logic recovery and what software did you use (R-Studio, GetDataBack, etc ...) ? i only tried ddrescue from linux bootable usb.


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Translator Sample Test Handbook.pdf [224.03 KiB]
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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 8th, 2018, 7:57 
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Joined: December 4th, 2012, 1:35
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Location: Adelaide, Australia
here is your problem

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 8th, 2018, 15:47 
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The drive might need head stack replacement and/or firmware bypass of G-List, etc ...

If you do need the data consult with a specialized data recovery firm.

I don't think that you can go any further now. It's the end for the do-if-yourself options.

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 9th, 2018, 0:51 
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Joined: October 7th, 2018, 3:22
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Location: melbourne
i supposed the first two bytes generally the header is missing. is there anyway to repair this?
i tried opening the file with cutepdf and adobe, it says the file is corrupted.
any good software tool to repair the file, the data is intact as can be seen from the hexa codes but header byte is missing, i actually think with different pdf apps may help.
besides, the file size is intact too.
may all kind souls please advise. what's your take?

HaQue wrote:
here is your problem

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 9th, 2018, 4:36 
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Joined: October 7th, 2018, 3:22
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Location: melbourne
i relooked at the hex code and saw nothing coming out of the content as well, my bad but how do you explain the file size?


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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 9th, 2018, 12:56 
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Joined: November 29th, 2006, 10:08
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Quote:
bad sectors, ddrescue found over few hundred GB of bad sectors.


Would probably explain the empty files.

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 9th, 2018, 13:55 
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Joined: December 19th, 2006, 8:49
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Need a better method to recover the files.

Might include :

- Firmware patch.
- Head swap (NOT BY YOU).
- Cloning/Imaging with hardware assisted tools that will not output empty data/files when the drive stop to respond.

...

etc ....

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 Post subject: Re: repair corrupted docs and pdfs
PostPosted: October 9th, 2018, 17:49 
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Joined: October 7th, 2018, 3:22
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Location: melbourne
thxs all for good advice. have a good day ahead.


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