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Can't recover a memory card after it had been formated

Posted: September 18th, 2010, 23:49
by Scorpion
Hi all,

I got today to my lab a memory card after it had been formated in Canon carmera.
This is the card:
http://img705.imageshack.us/img705/6083/dsc04348n.jpg

The label drive that the carmere created for it is CANON_DC. The file sistem is FAT32.
I tried to run few known softwares for that recovery before taking seriously steps like unsoldering the chip out and connect it to a nand reader.
I don't understand why after a simple format from th carmera, non of the softwares can recover the data from it.
Any ideas?
Any good softwares?

Many Thanks!

Re: Can't recover a memory card after it had been formated

Posted: September 19th, 2010, 5:23
by guru
It depends Canon EOS cameras quick format the flash. And maybe the user used RAW mode for photo's

Re: Can't recover a memory card after it had been formated

Posted: September 19th, 2010, 6:58
by pcimage
Check it out with Winhex.

Do you see data there, or just "00"?

If there is data, try "photorec" on it. That sees Canon raw (CR2) files as well as regular JPG

Re: Can't recover a memory card after it had been formated

Posted: September 19th, 2010, 16:51
by Scorpion
Hi pcimage,

Thank you for the tip.
I got the software winhex but unfortunately just the 23 first rows are with data and all the rest are "00"..
(Or I didn't use winhex right).
Is there any chance of recovery data from that card after a simple format?
(Or it was an innocent format after all?!)

Many Thanks!

Re: Can't recover a memory card after it had been formated

Posted: September 20th, 2010, 3:38
by dobrevjetser
Some camera's dont just format but erase the card also.
I think this is one of them.
Forget the data, its gone :(


dobre

Re: Can't recover a memory card after it had been formated

Posted: September 20th, 2010, 18:29
by Scorpion
dobrevjetser wrote:Some camera's dont just format but erase the card also.
I think this is one of them.
Forget the data, its gone :(


dobre


Even with Nand reader the recovery is impossible?
Or I didn't get the purpose of Nand reader?

Re: Can't recover a memory card after it had been formated

Posted: September 21st, 2010, 2:57
by dobrevjetser
Nand reader reads directly from the memorychip, but if the card is erased, the memorychip is erased; the result is the same.
Data is gone.

Re: Can't recover a memory card after it had been formated

Posted: September 21st, 2010, 18:40
by Scorpion
Emm.. Bad news to me and to my customer.
Is there any Black Magic for that? :?

Re: Can't recover a memory card after it had been formated

Posted: September 22nd, 2010, 2:43
by dobrevjetser
Sorry, no

Re: Can't recover a memory card after it had been formated

Posted: September 22nd, 2010, 2:53
by pcimage
Nope, once the beer has been drunk, it's gone!

Re: Can't recover a memory card after it had been formated

Posted: September 22nd, 2010, 5:20
by einstein9
Scorpion wrote:Emm.. Bad news to me and to my customer.
Is there any Black Magic for that? :?


could you tell me here, which Appz u tried with ur memory?
and status result of each ?

Re: Can't recover a memory card after it had been formated

Posted: September 22nd, 2010, 14:46
by BlackST
If the format method use internal erase, there's no chance. The mechanism require a command and the chips / card autonomously - in seconds! - perform a block erase and zerofill itself. Then the Fs and header is created. If the card is seen 'zeroed' , that's probably what happened.