From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 15 Aug 2001 07:10:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 15 Aug 2001 07:10:41 -0400 Received: from rom.cscaper.com ([216.19.195.129]:65156 "HELO mail.cscaper.com") by vger.kernel.org with SMTP id ; Wed, 15 Aug 2001 07:10:28 -0400 Subject: 4.7GB DVD-RAM geometry wrong? Content-Transfer-Encoding: 7BIT To: linux-kernel@vger.kernel.org From: "Joseph N. Hall" Ccc: Content-Type: text/plain; charset=US-ASCII Mime-version: 1.0 Date: Wed, 15 Aug 2001 04:10 -0700 X-mailer: Mailer from Hell v1.0 Message-Id: <20010815111030Z271139-761+1405@vger.kernel.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I don't know if I'm doing this the right way or not. I did spend an hour or three googling for "linux dvd-ram" and the like, and all I came up with was a bunch of 2.2-specific stuff, until I found a usenet posting that said in effect "you can write to /dev/scd0". So I gave that a try and it worked. Sort of. I have a Panasonic DVD-RAM, LF-D201 (SCSI 4.7/9.4GB). I put in a 4.7GB type II cartridge (that's a single-sided disk), did 'mkfs /dev/scd0' and then mounted it, and ... I have a 2.2GB disk! It works fine but my ignorant assumption is that it is using the geometry for the older 2.2gb media. Firing up cfdisk -z: cfdisk 2.10f Disk Drive: /dev/scd0 Size: 2290384896 bytes Heads: 255 Sectors per Track: 63 Cylinders: 278 I am new to the world of DVD-RAM so I don't know off the top of my head what the correct geometry is. But this ain't it! So nevermind the problems of creating partitions on the device. Why isn't the raw device the right size? I'm a non-subscriber so please cc: me. [root@talker src]# uname -a Linux talker 2.4.8 #2 SMP Tue Aug 14 02:37:03 MST 2001 i686 unknown -joseph