星期日, 2月 24, 2008

如何挽救已删除档案?

我们仍然无法知道『艳门照』的照片是如何泄露的。 人们猜测是edison 送修电脑时被人盗取的。 但是个人相信edison 送修电脑时,可能已将相关照片删除。

所以照片如何能泄露呢?

这是因为当将电脑档案删除时, 实际上所有的档案内容是不会收到实际的破坏, 它只是暂时被隐藏。 如何隐藏? 如果档案的名字是123.jpg, 那末它会被改成?23.jpg 。 那个符号"?" 实际上是一个无效码 (术语称为 null ), 它造成作业系统无法识别该档案, 让用户或电脑系统认为档案已删去。

所以, 基本上只要将该无效码改成有效的码后即可将该档案完全恢复,当然前提是该档案未被其它档案重写(overwrite)。

这里有一个免费的取消删去软件, 有需要的人可下载。可能有一天误删档案时可用来救急。
Recuva - File Recovery
资料抄自recuva 首页 :
Recuva (pronounced "recover") is a freeware Windows utility to restore files that have been accidentally deleted from your computer. This includes files emptied from the Recycle bin as well as images and other files that have been deleted by user error from digital camera memory cards or MP3 players. It will even bring back files that have been deleted by bugs, crashes and viruses!

如果你需要将PC 或 磁盘送修, 可以使用以下的软件来完全破坏磁盘的资料,以防止其它人盗取你的资料。
http://www.heidi.ie/eraser/
资料抄自Eraser 首页 :
Your first thought may be that when you 'delete' the file, the data is gone. Not quite, when you delete a file, the operating system does not really remove the file from the disk; it only removes the reference of the file from the file system table. The file remains on the disk until another file is created over it, and even after that, it might be possible to recover data by studying the magnetic fields on the disk platter surface.

第二个方法
当然你也可以格式磁盘后再一些无用的档案将磁盘填满也可以。最简单的就是使用vcd 的档案拷贝到磁盘内后再删去, 如此如果有人尝试复原该磁盘时只能发现被删去的vcd档。

接下来, 我们感兴趣的是其它800多张照片是否可能出现?

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