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From: "fbsd_user" <fbsd_user@a1poweruser.com>
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Date: Thu, 15 Jan 2004 20:25:27 -0500
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Subject: zero out unused HD space
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I am trying to zero out all the unused disk space in the FBSD system
Hard Drive.
Using this command
dd if=/dev/zero of=filler bs=1m

but get error message saying file system full and have file named
filler.

I don't think this commands is doing what I want.

How can I check to see if the unused space is all zeros?

Help please.