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Dead SD card
vuzedome:
R-Studio fails?
Interesting.
I'll take note of this.
Lupin:
Hard disk data recovery tools won't work on reformatted flash-based memory. These data recovery tools rely on the fact that data deleted on hard drives aren't deleted but the space allocated for those are declared free. When you deleted something from flash, the memory blocks are replaced with 1s.
vuzedome:
But I was able to recover stuff from flash cards easily.
fohfoh:
--- Quote from: vuzedome on July 10, 2010, 10:31:09 PM ---But I was able to recover stuff from flash cards easily.
--- End quote ---
Concur. While I don't really have experience, Lupin's statement does somewhat make sense though.
Freedom Kira:
--- Quote from: vuzedome on July 10, 2010, 12:48:19 PM ---R-Studio fails?
Interesting.
I'll take note of this.
--- End quote ---
Weird, huh? It freezes for a while, and then reports that the size in my SD card reader is -1MB.
I also don't doubt anymore that stuff can be recovered from flash memory, seeing all the tools available to do it and the reviews from users who were successful in doing so.
--- Quote from: Lupin on July 10, 2010, 02:18:58 PM ---Hard disk data recovery tools won't work on reformatted flash-based memory. These data recovery tools rely on the fact that data deleted on hard drives aren't deleted but the space allocated for those are declared free. When you deleted something from flash, the memory blocks are replaced with 1s.
--- End quote ---
I thought so too, kinda like a stack, where the data stored above the stack pointer is declared free, and to "delete" data you simply move the pointer down but you don't actually delete the data there. It just gets overwritten when something else uses the stack. Similarly, when data is "deleted" on a hard drive, the space the data was occupying is simply marked as free space and can be overwritten.
But even if the case you described is true, there are tools available that have proven their ability to recover deleted data from flash memory. How it works is (currently) beyond me.
--- Quote from: vuzedome on July 10, 2010, 10:31:09 PM ---But I was able to recover stuff from flash cards easily.
--- End quote ---
I wish I could say the same... Maybe the card is actually physically damaged somehow (no signs of it though), which would definitely make the data irrecoverable. I'd hate it if that was the case, as I hardly have any copies of the data on it, but it's possible.
Anyway, I think I'm going to try dd tonight. Give me a few hours. My only option with Linux right now is to use my torrenting box and the Rosewill USB reader. I guess I could boot into Linux on my laptop, but I'm not sure about drivers...
Edit: It seems I'm forced to boot into Ubuntu on my laptop, as the USB reader isn't picking up the card... Actually the reader on my laptop isn't picking it up too well either... Hmm. I think I will have to try something different if the laptop doesn't work. Gonna try this later because I'm tired and want to sleep. Before I go, though... how do you tell what device name is given to the inserted device under /dev/? I'm not too sure what to search for on Google for that, and the results I'm getting aren't helping. Or maybe I'm just too tired to make sense of it...
The exact command would be nice too, if you're willing to help a n00b.
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