From owner-freebsd-bugs Thu May 11 19:21:57 1995 Return-Path: bugs-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id TAA24520 for bugs-outgoing; Thu, 11 May 1995 19:21:57 -0700 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id TAA24509 for ; Thu, 11 May 1995 19:21:53 -0700 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.11/8.6.9) id TAA13855; Thu, 11 May 1995 19:21:31 -0700 From: "Rodney W. Grimes" Message-Id: <199505120221.TAA13855@gndrsh.aac.dev.com> Subject: Re: problem for reading old CD-ROM To: ohki@gssm.otsuka.tsukuba.ac.jp Date: Thu, 11 May 1995 19:21:31 -0700 (PDT) Cc: terry@cs.weber.edu, freebsd-bugs@FreeBSD.org In-Reply-To: <199505120216.LAA00408@smri01.gssm.otsuka.tsukuba.ac.jp> from "ohki@gssm.otsuka.tsukuba.ac.jp" at May 12, 95 11:16:00 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1086 Sender: bugs-owner@FreeBSD.org Precedence: bulk > > "Rodney W. Grimes" writes: > > > The cd-rom I tried to read is labled as > > > "This disc was mastered to ISO 9660 Standard. Level 1", > > > so I thought this is confomat cd-rom. (Is this not true?) > > > > Refering to ISO 9660 : 1988 (E) sections 6.1.2 and 6.2.2 tell me that > > a Logical Sector and Logical Block are of size 2^(n+9) meaning 2048 > > bytes or longer, thus a 512 byte logical block is infact a violation > > of ISO 9660 : 1988 (E). > > Can't `n' be 0, in that case, 2^(n+9) ==> 512 > (I'm sorry I can't find iso spec online from ftp.cdrom.co:/pub/cdrom, > so I might be wrong.) Your right, but see other mail from Frank D.(sp). I dropped a few things when I summarized above. Did you look in /pub/cdrom/faq/*, read those files there are probably pointers to many of the specs in there. Or send mail to rab@cdrom.com if all else fails, I am sure he can point you to the source for the specs. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD