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 Post subject: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 5:03 
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Joined: January 23rd, 2010, 16:20
Posts: 248
Location: Data Recovery in Glasgow, Scotland
Images 100% perfect, came out an HP Laptop

Recovery partition looks ok but system partition only raw, no file structure using all the main ones R-stud,GDB,UFS

Im thinking security encryption software, customer says no

any ideas

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 5:09 
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Joined: May 3rd, 2011, 9:52
Posts: 177
Location: France
Use entropy to check encryption

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 5:12 
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Joined: January 23rd, 2010, 16:20
Posts: 248
Location: Data Recovery in Glasgow, Scotland
Quote:
Use entropy to check encryption


im googling :)

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 6:21 
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Joined: May 6th, 2008, 22:53
Posts: 2138
Location: England
@buster80: A few comments...
buster80 wrote:
came out an HP Laptop

FYI HP did bundle encryption s/w (SafeBoot, I think) with their laptops, at least for a while (though that doesn't prove whether this was in use in your case, of course). As ici_lemmy says, looking at the entropy of the "filesystem" gives a hint...

I would also look at the MBR and following few sectors (it's usually a special MBR for SafeBoot or other "full disk encryption" systems) - unless the customer has overwitten the MBR (and perhaos following sectors) during their "attempts" to fix the problem before you got involved. Therefore IMHO it is vital for the customer to give you a full and exact history of what happened, and what they did in response so far.


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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 6:24 
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Joined: January 23rd, 2010, 16:20
Posts: 248
Location: Data Recovery in Glasgow, Scotland
Thats helpful Vulcan, client said it just chucked it and I.T had a quick look before passing it on.

No secrets or anomalies although I'm skeptical as its very strange

cheers for that reply , going to open it up in winhex and post a screenshot

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 6:31 
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Joined: May 3rd, 2011, 9:52
Posts: 177
Location: France
With winhex, you can also do "Analysis disk" (F2)... It will read all sectors and if a the graph is flat --> encryption

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: August 11th, 2011, 6:32 
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Joined: January 23rd, 2010, 16:20
Posts: 248
Location: Data Recovery in Glasgow, Scotland
nice, thats handy :)

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 Post subject: Re: Toshiba MK1652GSX Problem
PostPosted: September 1st, 2011, 11:50 
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Joined: January 15th, 2008, 11:06
Posts: 1419
Location: Providence, RI. Boston, MA USA
HP does have security software which encrypts user partition.

Working right now on a drive with such encryption.

Anyone have suggestions or hints?

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