From owner-freebsd-hackers Wed Jul 7 9: 0:35 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from mickey00.mickey.ai.kyutech.ac.jp (mickey00.mickey.ai.kyutech.ac.jp [131.206.21.1]) by hub.freebsd.org (Postfix) with ESMTP id C61EC14E03 for ; Wed, 7 Jul 1999 09:00:11 -0700 (PDT) (envelope-from ohashi@mickey.ai.kyutech.ac.jp) Received: from atohasi.mickey.ai.kyutech.ac.jp (atohasi.mickey.ai.kyutech.ac.jp [131.206.21.80]) by mickey00.mickey.ai.kyutech.ac.jp (8.9.3/3.7W-mickey) with ESMTP id AAA17843; Thu, 8 Jul 1999 00:58:48 +0900 (JST) Received: (from ohashi@localhost) by atohasi.mickey.ai.kyutech.ac.jp (8.9.3/3.7W) id AAA02586; Thu, 8 Jul 1999 00:58:47 +0900 (JST) Date: Thu, 8 Jul 1999 00:58:47 +0900 (JST) Message-Id: <199907071558.AAA02586@atohasi.mickey.ai.kyutech.ac.jp> To: ken@plutotech.com Cc: garbanzo@hooked.net, dmiller@search.sparks.net, akiyama@kme.mei.co.jp, freebsd-hackers@FreeBSD.ORG, ohashi@mickey.ai.kyutech.ac.jp Subject: Re: DVD-ram In-Reply-To: Your message of "Wed, 7 Jul 1999 14:36:12 JST". <199907070536.XAA88983@panzer.kdm.org> From: ohashi@mickey.ai.kyutech.ac.jp (Takeshi OHASHI) X-Mailer: mnews [version 1.21] 1997-12/23(Tue) Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG ken>>> I am a beta tester of the new od driver. It almost works fine on some ken>>> beta testers system, but we cannot redistribute without Mr. Akiyama's ken>>> permit. ken>> ken>>Of course. Well, if he doesn't mind, I'd like to take a look at it at some ken>>point. He is preparing the review version of od-driver. Please wait some days. ken>>> I have a new question. If od driver is needless, why cd and da drivers ken>>> are sepalate yet? Only difference is TOC ioctls, isn't it? ken>>It's true that the read/write interfaces of the two drivers are very ken>>similar, but there are a number of other differences. They probably could ken>>be combined with some difficulty, but then there are booting concerns (if ken>>everything is a DA device, how can you make sure you aren't booting off a ken>>CDROM drive?), major numbers, and device names to think about as well. Thank you for your answer. I think this situation is like as OD devices. Some DVD-RAM/MO/PD drives are recognized as DA and others are CD. For example, A PD media is used as a DA on PD drives. The PD media is used as a CD on DVD-RAM and DVD-ROM drives. It is very confusing. Sometime we want to disable booting from these devices. The reason why we want od driver. -- Takeshi OHASHI ohashi@mickey.ai.kyutech.ac.jp ohashi@jp.FreeBSD.ORG To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message