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Recovering data from damaged flash dvices(mp3 players,sdcard  

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williamsonn
(@williamsonn)
Member

Hello

I am curious to know if recovering data from damaged(cracked, drilled)flash memory devices like Mp3 players, SD cards, etc., are similarly difficult like recovering data from broken CDs/DVDs(which is according I have learnt here impossible), or it is easier?

Also the 1 pass erasing is similarly valid and enough for this kind of devices?
Thanks

Quote
Posted : 08/02/2013 5:52 pm
jaclaz
(@jaclaz)
Community Legend

Hello

I am curious to know if recovering data from damaged(cracked, drilled)flash memory devices like Mp3 players, SD cards, etc., are similarly difficult like recovering data from broken CDs/DVDs(which is according I have learnt here impossible), or it is easier?

Also the 1 pass erasing is similarly valid and enough for this kind of devices?
Thanks

Solid State Devices are more like "magnetic" devices and COMPLETELY UNLIKE optical media.
Let's say that they behave VERY like hard disks.

The good news are that they do not suffer from strong magnetic fields.

The one pass will do (maybe).

Search for "wear leveling".

But if you drill a hole in the chip or crack it, or more generally use Sledgy® currents on the device it will be even "more impossible" 😯 to retrieve any data, see
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/?p=123099

Read the whole thread
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/
particularly starting from here
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/?p=123075

Check also this one
http//reboot.pro/topic/16812-best-disk-eraser-for-use-in-win7pe/

So you have now asked about

  1. optical media (CD/DVD's) <- you forgot Blue-Ray's
  2. magnetic media (hard disks) <- you forgot Floppies
  3. Solid State Devices (flash memory) <- you forgot SSD drives
  4. [/listo]

    You are still missing

    jaclaz

ReplyQuote
Posted : 08/02/2013 6:41 pm
Belkasoft
(@belkasoft)
Active Member

Depends on whether or not the actual chips are damaged. I'm not talking about SSD's here (they are entirely different kettle of fish), but ordinary USB flash drives or SD cards can often be recovered, as the common type of damage would be broken off plugs/connectors. Of course if the actual memory chips are damaged, you're out of luck, but more often than not they aren't.

ReplyQuote
Posted : 08/02/2013 7:09 pm
jhup
 jhup
(@jhup)
Community Legend

I have successfully recovered data from memory ICs on highly damaged PCBs.

The two methods that worked are JTAG/I2C/SPI, and chip-off.

ReplyQuote
Posted : 08/02/2013 10:43 pm
williamsonn
(@williamsonn)
Member

I have successfully recovered data from memory ICs on highly damaged PCBs.

The two methods that worked are JTAG/I2C/SPI, and chip-off.

Once the chips are cracked can anything be recovered?

ReplyQuote
Posted : 09/02/2013 1:58 am
williamsonn
(@williamsonn)
Member

Hello

I am curious to know if recovering data from damaged(cracked, drilled)flash memory devices like Mp3 players, SD cards, etc., are similarly difficult like recovering data from broken CDs/DVDs(which is according I have learnt here impossible), or it is easier?

Also the 1 pass erasing is similarly valid and enough for this kind of devices?
Thanks

Solid State Devices are more like "magnetic" devices and COMPLETELY UNLIKE optical media.
Let's say that they behave VERY like hard disks.

The good news are that they do not suffer from strong magnetic fields.

The one pass will do (maybe).

Search for "wear leveling".

But if you drill a hole in the chip or crack it, or more generally use Sledgy® currents on the device it will be even "more impossible" 😯 to retrieve any data, see
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/?p=123099

Read the whole thread
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/
particularly starting from here
http//reboot.pro/topic/13601-software-to-wipe-a-systemdrive-from-windows/?p=123075

Check also this one
http//reboot.pro/topic/16812-best-disk-eraser-for-use-in-win7pe/

So you have now asked about

  1. optical media (CD/DVD's) <- you forgot Blue-Ray's
  2. magnetic media (hard disks) <- you forgot Floppies
  3. Solid State Devices (flash memory) <- you forgot SSD drives
  4. [/listo]

    You are still missing

    jaclaz

jaclaz my lack of knowledge is great, so, although I am beginning to read and trying to learn something, my questions are many.So I am sue that every time I make a question here I will learn something 😉

By the way, Why do you say

"The one pass will do (maybe)" That word "maybe" is somewhat disconcerting for me If one pass is enough for any optical device, why seems to be not totally sure for an mp3 player, or a sd card?

In some forums I have read that ccleaner(1 or more passes) is not suited for deleting and cleaning these devices. Do you think so? Is necessary other class of software?

thanks 😉

ReplyQuote
Posted : 09/02/2013 2:07 am
jhup
 jhup
(@jhup)
Community Legend

I have successfully recovered data from memory ICs on highly damaged PCBs.

The two methods that worked are JTAG/I2C/SPI, and chip-off.

Once the chips are cracked can anything be recovered?

Depends on the type of damage and the IC. There have been various recoveries using some esoteric solutions successfully.

Take a look at Adam Laurie & Zac Franken at Aperture Labs work on "reading" data from a masked ROM. Similarly, works of Christopher Tarnovski of Flylogic Engineering can suggest some solutions. Sometimes the method is not so obvious.

ReplyQuote
Posted : 09/02/2013 2:30 am
jaclaz
(@jaclaz)
Community Legend

jaclaz my lack of knowledge is great, so, although I am beginning to read and trying to learn something, my questions are many.So I am sue that every time I make a question here I will learn something 😉

No, you dont' learn by making (again and again) the SAME questions (slightly differently worded) you learn by reading the answers, understanding them AND DOING YOUR OWN RESEARCH.

By the way, Why do you say

"The one pass will do (maybe)" That word "maybe" is somewhat disconcerting for me If one pass is enough for any optical device, why seems to be not totally sure for an mp3 player, or a sd card?

Search for "wear leveling".

BTW, noone ever talked of one (or more) pass(es) on optical devices.

jaclaz

ReplyQuote
Posted : 09/02/2013 5:36 pm
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