如果您擔心格式化硬碟後資料會被恢復,您需要使用像DBAN一樣強大的選項,還是使用功能較弱的選項?今天的超級使用者問答帖子回答了一位好奇的讀者的問題。
今天的問答環節是由SuperUser提供的,SuperUser是Stack Exchange的一個分支,是一個由社群驅動的問答網站分組。
圖片由馬特鄧洛普(Flickr)提供。
超級使用者讀者cantsay想知道為什麼格式化後可以恢復資料:
If a quick format just marks bits as writable and a normal format writes zeroes to the entire disk, why do people bother with DBAN and why are multiple passes ever required?
為什麼格式化後可以恢復資料?
超級使用者貢獻者Alex McKenzie為我們提供了答案:
It used to be possible by reading the residual magneti** left by the previous bits. This is not so much of an issue now that the tracks and bits that hard-drives write are so **all. It is almost impossible to recover any meaningful data off of a zeroed drive with modern disks.
This next section is only true for Windows XP (as Psycogeek pointed out, Vista and later Windows systems do zero out the hard-drive if you do a full format).
That being said, your definiti*** of quick format and normal format are off. A normal format does not zero out the disk, that would take too long. The difference between the two is that a normal format looks for bad sectors on a drive while a quick format does not.
So it is best to use a tool like DBAN to do at least one pass if you want to make sure data is not recoverable. And if you are doing one pass, then why not do a few more just for fun?
有什麼要補充的解釋嗎?在評論中發出聲音。想從其他精通技術的Stack Exchange使用者那裡瞭解更多答案嗎?在這裡檢視完整的討論主題。
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