1996-12-14 - Re: Secure Erase for PCs?

Header Data

From: Matthew Ghio <ghio@myriad.alias.net>
To: cypherpunks@toad.com
Message Hash: 880bb38f0991cd714f6851212f974cac00635c9e2ac7c9b4c363728dfa8e5bd4
Message ID: <199612141959.OAA00409@myriad>
Reply To: <199612100131.RAA19898@netcom.netcom.com>
UTC Datetime: 1996-12-14 20:01:03 UTC
Raw Date: Sat, 14 Dec 1996 12:01:03 -0800 (PST)

Raw message

From: Matthew Ghio <ghio@myriad.alias.net>
Date: Sat, 14 Dec 1996 12:01:03 -0800 (PST)
To: cypherpunks@toad.com
Subject: Re: Secure Erase for PCs?
In-Reply-To: <199612100131.RAA19898@netcom.netcom.com>
Message-ID: <199612141959.OAA00409@myriad>
MIME-Version: 1.0
Content-Type: text/plain

Dale Thorn <dthorn@gte.net> wrote:
> It's a hundred times easier to do tools for the IBM PC.  I make
> utilities for the PC, and it would take no more than ten or fifteen
> minutes to cook this one up.

It took me less than ten minutes...

> But nobody answered my question:  Is there a shortcut way to do the
> wipe, say, thirty times?  Ordinarily, I'd run the program thirty
> times, which would consist of a data write followed by a flush,
> which would take 30x amount of time.

Try this in Linux...

set n=1
cat /dev/urandom >/tmp/fill
rm /tmp/fill
@ n = $n + 1
if ( $n < 30 ) then
  goto loop