From owner-freebsd-questions@FreeBSD.ORG Mon Oct 8 04:08:22 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0F54F106566C for ; Mon, 8 Oct 2012 04:08:22 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) by mx1.freebsd.org (Postfix) with ESMTP id A923B8FC08 for ; Mon, 8 Oct 2012 04:08:21 +0000 (UTC) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.14.5/8.14.5) with ESMTP id q9848KMG010489 for ; Sun, 7 Oct 2012 22:08:20 -0600 (MDT) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.14.5/8.14.5/Submit) with ESMTP id q9848K9Q010486 for ; Sun, 7 Oct 2012 22:08:20 -0600 (MDT) (envelope-from wblock@wonkity.com) Date: Sun, 7 Oct 2012 22:08:20 -0600 (MDT) From: Warren Block To: freebsd-questions@freebsd.org Message-ID: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (wonkity.com [127.0.0.1]); Sun, 07 Oct 2012 22:08:20 -0600 (MDT) Subject: DVD OPC errors with growisofs 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 Oct 2012 04:08:22 -0000 I'm using growisofs to write DVDs of backup files. Some combinations of older drives and newer media give ":-( unable to PERFORM OPC: Input/output error". Can limiting write speed avoid these errors? And what ways are there to detect the fastest speed supported by both drive and media?