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SSD Samsung 870 EVO 1 To
http://forum.hddguru.com/viewtopic.php?f=10&t=43719		 Page 1 of 1
Author:  tcccorp [ October 1st, 2023, 6:14 ]
Post subject:  SSD Samsung 870 EVO 1 To
hello,

I saw many trouble with this SSD ... and I've a trouble :(

I worked and suddently my computer was freezed . I tried to restart and nothing happened

if I put this SSD on another computer with another disk, start is very very slow ( boot is done on the another disk) .

on the explorer, 870 disk is seen with 2 partitions but I'm not able to go inside. In the device tab, I can see this disk ( a least name). On the partition tab, I can see 2 partitions.

If i use magician, after a very long time, this 870 evo is not seen .

i saw several topics for this model but I didin't find how to try to repair my disk to retrieve datas ...

if someone have an idea, i'll be happy :), thanks
Author:  labtech [ October 1st, 2023, 6:48 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
It cannot be repaired, due to nand flash degradation & possibly now has turned into a firmware problem.
Shut it down and clone it, if still possible, with something like ddrescue or hddsuperclone (check their tutorials).
Then use data recovery software to recover the files to yet another drive.

Otherwise, find a data recovery specialist (not a computer shop).
Author:  tcccorp [ October 1st, 2023, 7:31 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
hello Labtech,

I'm not able to clone this disk;( so only way is ask to a specialt?

Thanks
Author:  Lardman [ October 1st, 2023, 7:48 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
I've had a number of these where although the capacity is correct the UA was not accessible despite my best efforts and they've had to be returned unrecovered. There is no support for EVO's in pc3K, if it's got that far you can try a dr lab but manage your expectations.
Author:  tcccorp [ October 1st, 2023, 8:12 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
hello Lardman,

thanks for your answer. so disk to the bin :(
Author:  tcccorp [ October 1st, 2023, 10:05 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
do you know if there is a way to have a SWD or JTAG pins on PCB? I didn't find a datasheet :(

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Author:  fzabkar [ October 1st, 2023, 19:04 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
tcccorp wrote:
do you know if there is a way to have a SWD or JTAG pins on PCB? I didn't find a datasheet :(

I think people use something like JTAGulator.
Author:  pepe [ October 2nd, 2023, 2:25 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
It's gonna be a long trip, be prepared.

pepe
Author:  Lardman [ October 2nd, 2023, 3:52 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
tcccorp, This might give you a little insight - http://www2.futureware.at/~philipp/ssd/ ... Manual.pdf
Author:  tcccorp [ October 5th, 2023, 14:58 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
hello all

Thanks a lot for your answer. So I think if I m able to change controler, it ll work?
Author:  pepe [ October 5th, 2023, 15:18 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
Nope, controller is most likely just fine.
Author:  Lardman [ October 5th, 2023, 15:20 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
tcccorp wrote:
So I think if I m able to change controler, it ll work?
Unlikely - the controller itself is probably fine, the firmware is stored on the nand chips .
Author:  tcccorp [ October 7th, 2023, 5:18 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
Lardman wrote:
tcccorp, This might give you a little insight - http://www2.futureware.at/~philipp/ssd/ ... Manual.pdf


Thanks a lot Lardman, it is very interesting ! I ve to read this pdf in details and learn more !
Author:  tcccorp [ October 7th, 2023, 5:22 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
Lardman wrote:
tcccorp wrote:
So I think if I m able to change controler, it ll work?
Unlikely - the controller itself is probably fine, the firmware is stored on the nand chips .


hello
so it does mean, even I m be able to find jtag or swd, i should "dump" flash but it ll be in raw and I'll not be able to recover something because at least it ll be xored and data could be everywhere.... I'm right ?
Author:  pepe [ October 7th, 2023, 16:20 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
you cannot dump NAND through jtag, at least not as easily as you probably think. It would require programming skills in multiple platforms, or knowledge about boundary scan parameters, and on top of that it would be very slow. Then you would face the problems everybody faces who tries chip-off on these...

pepe
Author:  tcccorp [ October 14th, 2023, 5:50 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
hello,

for your information, trouble was too many error on the nand. PC3000 was able to read this ssd and retrieve some data :)
Author:  labtech [ October 16th, 2023, 17:39 ]
Post subject:  Re: SSD Samsung 870 EVO 1 To
Thanks for confirming the initial diagnosis suspicion.
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