Date: Fri, 12 May 1995 11:16:00 +0900 From: ohki@gssm.otsuka.tsukuba.ac.jp To: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> Cc: terry@cs.weber.edu, freebsd-bugs@FreeBSD.org Subject: Re: problem for reading old CD-ROM Message-ID: <199505120216.LAA00408@smri01.gssm.otsuka.tsukuba.ac.jp> In-Reply-To: Your message of "Thu, 11 May 1995 18:58:28 MST" References: <199505120158.SAA13806@gndrsh.aac.dev.com>
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"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.) Thank you for your time.
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