From owner-freebsd-questions@FreeBSD.ORG Mon Mar 8 11:25:57 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 55129106564A for ; Mon, 8 Mar 2010 11:25:57 +0000 (UTC) (envelope-from kuku@kukulies.org) Received: from werkwelt.de (post.werkwelt.de [91.194.85.74]) by mx1.freebsd.org (Postfix) with ESMTP id E9A968FC2D for ; Mon, 8 Mar 2010 11:25:56 +0000 (UTC) Received: from [134.61.4.247] (account kuku@kukulies.org [134.61.4.247] verified) by werkwelt.de (CommuniGate Pro SMTP 5.0.13) with ESMTPSA id 6803648 for freebsd-questions@freebsd.org; Mon, 08 Mar 2010 12:25:37 +0100 Message-ID: <4B94DEA0.5030103@kukulies.org> Date: Mon, 08 Mar 2010 12:25:20 +0100 From: Christoph Kukulies User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: md5 of /dev/acd0 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Mar 2010 11:25:57 -0000 I was trying to determine a md5sum from a DVD I had inserted into a FreeBSD 8.0 on my Dell Inspiron 9400 notebook. I thought dd if=/dev/acd0 | md5 would work but I got "Invalid argument". Trying dd if=/dev/acd0 bs=1048k | md5 worked in so far that it didn't yield an error but after the DVD stopped spinning the command hung and I only could bail out using ^C. Any clues? -- Christoph