From owner-freebsd-questions Sat Sep 22 12:42:57 2001 Delivered-To: freebsd-questions@freebsd.org Received: from lists.blarg.net (lists.blarg.net [206.124.128.17]) by hub.freebsd.org (Postfix) with ESMTP id AEA0337B416 for ; Sat, 22 Sep 2001 12:42:54 -0700 (PDT) Received: from thig.blarg.net (thig.blarg.net [206.124.128.18]) by lists.blarg.net (Postfix) with ESMTP id 611EEBCED for ; Sat, 22 Sep 2001 12:42:54 -0700 (PDT) Received: from localhost.localdomain ([206.124.139.115]) by thig.blarg.net (8.9.3/8.9.3) with ESMTP id MAA02401 for ; Sat, 22 Sep 2001 12:42:52 -0700 Received: (from jojo@localhost) by localhost.localdomain (8.11.3/8.11.3) id f8MJfpx52500; Sat, 22 Sep 2001 12:41:51 -0700 (PDT) (envelope-from swear@blarg.net) To: freebsd-questions@freebsd.org Subject: Why is ISO CD one block bigger than ISO file? From: swear@blarg.net (Gary W. Swearingen) Date: 22 Sep 2001 12:41:50 -0700 Message-ID: Lines: 9 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) 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 I've got a 4.4R ISO file. Size is 324368*2048. I did "burncd -f /dev/acd0c -s 8 data 4.4R.iso fixate" and then did "dd if=/dev/acd0a bs=2k | wc" which showed the CD was one 2048-byte block bigger than the ISO file. I used "dd" and "md5" to verify that the first 324368 blocks of the CD were the same as the ISO file. Why the extra block? Also: Is there ANY difference between /dev/acd0a and /dev/acd0c between the name and the minor number? May they always be used interchangeably? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message