From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268016AbUHKKEk (ORCPT ); Wed, 11 Aug 2004 06:04:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268017AbUHKKEk (ORCPT ); Wed, 11 Aug 2004 06:04:40 -0400 Received: from ipx-98-250-190-80.ipxserver.de ([80.190.250.98]:24843 "EHLO taytron.net") by vger.kernel.org with ESMTP id S268016AbUHKKEj (ORCPT ); Wed, 11 Aug 2004 06:04:39 -0400 Message-ID: <4119EF1D.2040102@tuxbox.org> Date: Wed, 11 Aug 2004 12:04:13 +0200 From: Florian Schirmer User-Agent: Mozilla Thunderbird 0.7.1 (Windows/20040626) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Matthias Andree CC: Gene Heskett , linux-kernel@vger.kernel.org Subject: Re: PATCH: cdrecord: avoiding scsi device numbering for ide devices References: <200408101027.i7AARuZr012065@burner.fokus.fraunhofer.de> <200408101228.27455.gene.heskett@verizon.net> <20040811002455.GA7537@merlin.emma.line.org> In-Reply-To: <20040811002455.GA7537@merlin.emma.line.org> X-Enigmail-Version: 0.84.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, >The switch from read mode to write mode (i. e. find end of data, >increase LASER power to write and pick up writing) takes some time >(order of magnitude: µs) which means some pits/lands aren't right during >that phase. How many pits/lands are broken break depends on hard- and >firmware, write speed and model and for CAV the radial position on the >disc. Fast writers will need to reach a linear velocity around 60 m/s >(216 km/h); one µs time to ramp up LASER power from read to write level >there means up to 60 µm lost. > With burn-proof on you get a disc which is still usable but with some pits/lands missing/misplaced. With burnproof off you get a completely unusable disc. So whats the _real_ point behind disabling burn proof? Thanks, Florian