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Possible Duplicate:
How to quickly and effectively wipe a Win7 x64 hard drive

Which tool should I use to wipe free space on Windows 7?

It should be free and preferably open source.

Community
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Makach
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1 Answers1

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Try CCleaner. Go to Options > Settings > Wipe Free Space. It's free, but not open source.

Also, here is a list of utilities that should help accomplish what you want.

Hope that helps.

Jeff
  • 628