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I was thinking, since all this (reasonable) fuss on wiping a disk over 10 times to ensure non-readability, how come we're yet very limited on space usage?
If, for example, I overwrote a bitmap file with a text one, what stops the computer from recovering/storing both (without using additional space)? Just a couple curiosities of mine.
On Tue, Jan 26, 2010 at 4:08 PM, Michael Holstein < firstname.lastname@example.org> wrote:
> > By the way, does somebody knows about the flash memory?
> > Is zeroing a whole usb key enough to make the data unrecoverable?
> No, wear-leveling (done at the memory controller level) will dynamically
> re-map addresses on the actual flash chip to ensure a relatively
> consistent number of write cycles across the entire drive.
> The only way to completely "wipe" a flash disk is with a hammer.
> Michael Holstein
> Cleveland State University
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