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Possible Duplicate:
Is there a program to truly delete all deleted files?

I recently moved a bunch of files off my harddrive. How can I zero out the unallocated disk space to make sure all the files I recently moved off the harddrive are unrecoverable?

This is windows-xp on my work computer, so I would prefer not to have to install anything if possible. I am familiar with shred, but I think that only works if you still have the files.


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marked as duplicate by Kez, Sathya, random Aug 12 '10 at 23:01

This question was marked as an exact duplicate of an existing question.

@kez: My question is a little different because I don't want to install anything, so the accepted answer on the other post doesn't work for me. If you want to put your Cipher answer here, I would be glad to accept it. (I read every post with "delete" in it before posting... but I missed that post because windows is one of my hidden tags... guess I'll have to learn from that). – Jarvin Aug 12 '10 at 21:20
If the answer on the dupe solves your problem, you can upvote that. – random Aug 12 '10 at 23:02

You will have to install a 3rd-party app for this.

There are plenty - many are free.

In future you may want to use something like (true crypt dot org) to store sensitive files.


Also check out serase (I think that's what it's called), made by Mark Russinovich. He has an awesome set of tools - search for sysinternals. It might be what you're looking for.

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CIPHER /W is a built-in command that will do the job :-)… – Kez Aug 12 '10 at 21:01

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