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More secure (if you're paranoid). Military grade disk wiping does 3-5 passes of random data writing. Evidently some evidence still remains after writing a zero what its original value was. This evidence might not be legible by standard mechanisms, but if someone wants it badly enough could determine it. For handing a disk off to a friend, /dev/zero would probably be just fine.
Joseph
[EMAIL PROTECTED] wrote:
|On Mon, Jul 28, 2003 at 01:04:42PM -0400, B Smith wrote: | |>I'm about to give an older computer to a friend of mine, but before I do |>so I would like to clean the hard drive thoroughly. I was thinking that |>a few ` dd if=/dev/urandom of=/dev/hda ` would do the job, but am unsure |>of what block size to use. Is there an easy way to find out the hard |>drive's block size? | | |For my own edification, why is this better than /dev/zero ? | |Thanks, |David -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (Cygwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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