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 Post subject: Formatted WD50NDZW
PostPosted: October 28th, 2024, 16:08 
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Joined: November 3rd, 2013, 13:04
Posts: 330
Location: Hungary
Hi there!

I have a case, and i need some confirmation.
My customer formated his drive, and now all sectors are zeroed.
I have saved the 190 module, in MRT T2 editor searched for all nodes, and all rebuilded T2 RAW files resulted 0GB valid data.

So please somebody could confirm me that, this formatted drive is not has any recoverable data?
...or if somebody can create T2 Raw data file that has any recoverable data, please attache to comment.

The packed 190 module is attached.

Thanks for any help!

Attachment:
190.7z [687.86 KiB]
Downloaded 198 times


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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 29th, 2024, 0:05 
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Joined: April 7th, 2009, 21:36
Posts: 487
Common scenario these days :(

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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 29th, 2024, 19:44 
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Joined: October 3rd, 2005, 0:40
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Location: Hungary
I guess i could do it, at least for raw rec...

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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 29th, 2024, 22:02 
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Joined: September 11th, 2024, 10:21
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As I understood, it depends from was SED turned on or not. SED also depends from the sector number (LBA) and when new T2 created (for RAW scan) physycal sectors have new logic number. That's why the decryption produces white noise enstead of real data.


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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 30th, 2024, 4:33 
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aekhv wrote:
As I understood, it depends from was SED turned on or not. SED also depends from the sector number (LBA) and when new T2 created (for RAW scan) physycal sectors have new logic number. That's why the decryption produces white noise enstead of real data.


I read out all SA modules over USB, so in this case the decryption is not matters i think. I still use original PCB with this drive.

But now i got a formatted Venicer drive (new case), and after i created new T2 raw file, i see the WD main program says there are 400GB data, but uploading the new T2 raw file to memory, there are still all sectors are zeroed.


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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 30th, 2024, 4:54 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
Quote:
As I understood, it depends from was SED turned on or not. SED also depends from the sector number (LBA) and when new T2 created (for RAW scan) physycal sectors have new logic number. That's why the decryption produces white noise enstead of real data.


before doing experiments i had same oppinion but i was able to read correctly decrypted sectors so i definitely think pba is used for seeding.

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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 30th, 2024, 6:05 
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Joined: September 11th, 2024, 10:21
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Location: Russia
Quote:
i was able to read correctly decrypted sectors

PCHS reading with ignoring T2?


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 Post subject: Re: Formatted WD50NDZW
PostPosted: October 30th, 2024, 6:54 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
do i need to answer that?

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 Post subject: Re: Formatted WD50NDZW
PostPosted: November 27th, 2024, 8:27 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
hello,
it seems like i have to admit i was clearly wrong with the upper statement, SED was OFF on that drive i got those results. :oops:
i felt confident that all SG drives have SED on :s
sorry

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