Quote:
Originally Posted by nyhk
the cache is like ram in your computer, it will be lost when the power goes.
unwritten sectors? then it is not overwritten, i guess.
it has long been known that overwriting the disk (modern disks anyway) is more secure than physically destroying it.
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Just because you haven't written any user data to a sector it doesn't mean the OS hasn't threaded or cached something there. Also, if you have many different copies of the same file an older version can be restored, well with other filing systems.
How are you going to put back together a cracked platter?