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Dual USB Flash not recognized on BOTH

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(@wotsits)
Posts: 253
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SanDisk dual USB flash drive - one end is USB 3.0 and the other is USB Type C.

Plug it in to computer and nothing is recognized, pull up FTK Imager and the drive is not there. Try the other USB Type C and same thing. Tried it on 3 different computers - PCs and Macs - and it's the same.

From what I can tell it's relatively new.

Anybody know what the problem is and what to do?

 
Posted : 04/06/2017 12:37 am
(@wotsits)
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Given it's not being picked up at all I'm guessing it's a bad device based on advice from the manufacturer - is there any way to get the data from it?

 
Posted : 04/06/2017 12:51 am
MDCR
 MDCR
(@mdcr)
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You could try chip off from the board and recover data that way, assuming that the device is undamaged.

 
Posted : 04/06/2017 1:32 am
(@athulin)
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Plug it in to computer and nothing is recognized, pull up FTK Imager and the drive is not there. Try the other USB Type C and same thing. Tried it on 3 different computers - PCs and Macs - and it's the same.

Informally, that seems like the device won't talk protocol.

However, without any information about how the connection to each of these computers was made, how they were configured and what operating systems was used, and possibly also drivers, it's not a very good basis for conclusions.

I expect power requirements isn't an issue in this case, but generally you need to ensure that the device is adequately powered for normal operation as well.

What trace and error messages (if any) did you find when you checked the system logs after the connection attempts?

Anybody know what the problem is and what to do?

Tools like Wireshark/USBpcap or the Microsoft USB test tools may be useful. For example, the MS USB3HWVerifierAnalyzer can be very useful for some kinds of misbehaving devices. (The likelihood that a SANdisk device should misbehave as regards protocol, is fairly low, though.) But they do assume that you have s working USB platform to work with.

You are sure it's a legitimate device? It's not one of these USB buster things that fries your USB electronics?

Some SANdisk USB devices that I've used do not have ordinary USB connectors (Standard A plugs in those cases), but cut-down variants. They often fail to work in some of my computers, but work perfectly with others – I suspect some kind of connection problem, but I've never bothered enough to find out.

 
Posted : 04/06/2017 10:52 am
jaclaz
(@jaclaz)
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Given it's not being picked up at all I'm guessing it's a bad device based on advice from the manufacturer - is there any way to get the data from it?

It sounds like a dead stick.

Sandisk USB sticks (UNlike most other similar devices) traditionally have a set of internal pins - sort of JTAG - for programming it (but cannot say if your specific device still has it) and I wouldn't exclude that *somewhere* an interface to access those pins could exist ? , but before anything else, I would open it up and check for cold soldering, broken traces and the like, it wouldn't be the first stick that failed due to "mechanical stress", something loosely *like*
https://www.youtube.com/watch?v=aA7DujwfuWE

You can easily recognize that these are professionals because gloves are worn during the repair attempt wink .

Besides pure chipoff (that may be complex), see (.pdf, 4 Mb)
http//adreca.net/NAND-Flash-Data-Recovery-Cookbook.pdf

do not forget the possibility of transplanting the chip to an identical USB device, *like*
https://www.youtube.com/watch?v=_catJb73LI8

jaclaz

 
Posted : 04/06/2017 5:33 pm
(@wotsits)
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After taking it to some outside sources it seems confirmed it is a 'dead stick', and it is a hardware problem though I'm not sure what exactly.

Nobody can guarantee the data can be recovered from it.

Can anyone tell me what possibilities there are to get the data back?

 
Posted : 14/06/2017 1:14 pm
jaclaz
(@jaclaz)
Posts: 5133
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After taking it to some outside sources it seems confirmed it is a 'dead stick', and it is a hardware problem though I'm not sure what exactly.

Nobody can guarantee the data can be recovered from it.

Can anyone tell me what possibilities there are to get the data back?

Of course ) , roughly 42.42%.

But this percentage may vary between 0.17% and 61.13% depending on the specific method used to attempt the recovery and on the actual diagnosis.

"Dead stick" is the term highly specialized technicians use, and it includes a vast range of possible causes of death …

jaclaz

 
Posted : 14/06/2017 2:07 pm
kacos
(@kacos)
Posts: 93
Trusted Member
 

After taking it to some outside sources it seems confirmed it is a 'dead stick', and it is a hardware problem though I'm not sure what exactly.

Nobody can guarantee the data can be recovered from it.

Can anyone tell me what possibilities there are to get the data back?

'dead stick' is quite broad a term.
If the problem is the controller, it may be possible to retrieve the data from the NAND with chip off. I am pretty sure there are data retrieval companies in London that can help with that.

 
Posted : 14/06/2017 6:57 pm
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