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I want to know how Live DVD and USB drive work.

  • Do they use the disk of my PC at all?
  • If so, do they delete everything after I shut down the PC?
  • If so, are the tmp files deleted securely? Or they can be recovered?

I'm thinking of a Live DVD like BackTrack, which is used for security tests, etc.

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up vote 2 down vote accepted

They usually mount tmpfs to /tmp, which is an in-memory filesystem (like a ramdisk on steroids). So, it is as secure as your memory is.

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Perfect, thanks. –  ChocoDeveloper Jan 7 '13 at 16:42
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