From owner-freebsd-questions Thu Nov 8 3:17:12 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mcqueen.wolfsburg.de (pns.wobline.de [212.68.68.5]) by hub.freebsd.org (Postfix) with ESMTP id 8E70A37B41C for ; Thu, 8 Nov 2001 03:17:09 -0800 (PST) Received: from colt.ncptiddische.net (ppp-227.wobline.de [212.68.69.238]) by mcqueen.wolfsburg.de (8.11.3/8.11.3/tw-20010821) with ESMTP id fA8BH6S16177 for ; Thu, 8 Nov 2001 12:17:07 +0100 Received: from jodie.ncptiddische.net (jodie.ncptiddische.net [192.168.0.2]) by colt.ncptiddische.net (8.11.6/8.11.6) with ESMTP id fA8BHID09749 for ; Thu, 8 Nov 2001 12:17:18 +0100 (CET) (envelope-from nils@tisys.org) Received: from jodie.ncptiddische.net (jodie.ncptiddische.net [192.168.0.2]) by jodie.ncptiddische.net (8.11.6/8.11.6) with ESMTP id fA8BGvp00520 for ; Thu, 8 Nov 2001 12:17:33 +0100 (CET) (envelope-from nils@tisys.org) Date: Thu, 8 Nov 2001 12:16:57 +0100 (CET) From: Nils Holland To: freebsd-questions@freebsd.org Subject: dd and cat - Did I miss something? Message-ID: <20011108121412.Q515-100000@jodie.ncptiddische.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi folks, I just wanted to copy a data CD. So I thought I'd first read it out. After I had put the CD into my ATAPI CD-ROM drive, I issued the following command: dd if=/dev/acd0a of=cdimage But it didn't work. I received a message saying "acd0a - Invalid Argument". Next, I tried something different, namely: cat /dev/acd0a | dd of=cdimage and that did work! Any clues why my first attempt (only using dd and not cat) failed? Greetings Nils Nils Holland Ti Systems - FreeBSD in Tiddische, Germany http://www.tisys.org * nils@tisys.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message