Dear Experts... (The experts in NAND recoveries)

Sometimes we receive DEFECTED MicroSD, Flashes and CF memories,

The Question here for you guys is this: Why Windows (for example) reads it as 30mb?

Why 30mb?, why not for example 100 or anything else?... (i have few samples of those)

Anyone knows here?

thank you

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Kuwait Data Recovery - UNIX GTC
The only reason for time is so that everything doesn't happen at once. By: Albert Einstein

I always presumed it was the size of the controller, but maybe not. That is a good question.

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HDD, SSD, Flash and RAID Data Recovery
Founder of The Data Recovery Professionals Group

I thought about that, but really 30mb or 100mb of data(instructions) inside the controller is really Huge amount of data (for single flash/mem)

i really cannot find a Tech. Doc. talking about this thats why posted it here...

Maybe one of those knows Sasha/Sergey/Michal i don`t know

still waiting for others opinion but Thx for bringing this here..

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Kuwait Data Recovery - UNIX GTC
The only reason for time is so that everything doesn't happen at once. By: Albert Einstein

Had Kingston MicroSD show 31Mb. I have repartitioned some before with this issue and they appeared to work ok after... but I would never use a MicroSD for anything after any time of issue like this. I would hazard a guess that part of the partition table has been corrupted, probably due to degrading NAND, and windows interprets wrong. being SD, it could be a secure digital partition is showing while the normal user partition is gone. Never seen this on anything other than MicroSD cards.

I have also seen quite a few standard flash drives with 30mb(ish). When looking at the data in hex it is either all 00 00 or FF FF.

_________________
HDD, SSD, Flash and RAID Data Recovery
Founder of The Data Recovery Professionals Group

And sometimes it is 2TB...on average non-fake 8GB MSD