Date: Fri, 13 Apr 2001 19:09:40 -0400 From: Graywane <graywane@home.com> To: Kal Torak <kaltorak@quake.com.au> Cc: Ben Smithurst <ben@FreeBSD.ORG>, FreeBSD-questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Creating EXACT image of a CD Message-ID: <20010413190940.A6820@home.com> In-Reply-To: <3AD784C7.B7F0B80A@quake.com.au>; from kaltorak@quake.com.au on Sat, Apr 14, 2001 at 08:59:19AM %2B1000 References: <3AD68EBA.EC6A8380@quake.com.au> <20010413135052.H75296@scientia.demon.co.uk> <3AD784C7.B7F0B80A@quake.com.au>
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--u3/rZRmxL6MmkK24 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Here is the track layout for a data CD: +---------------------- Yellow Book -------------------+---- Red Book ---+ ! ! ! v <------------------- 2352 Bytes -------------------> v v +----------+---------------------------------+---------+-----------------+ ! Sync ! ! CD-ROM ! ! ! & ! User Data (2048 Bytes) ! EDC/ECC ! EDC/ECC/Control ! ! Headers ! ! (280) ! (882 Bytes) ! ! (24) ! ! ! ! +----------+---------------------------------+---------+-----------------+ Michael On Sat, Apr 14, 2001 at 08:59:19AM +1000, Kal Torak wrote: > > > I want to create exact ISO images of CD's... > > > Like create the file system using the exact same file names and > > > structure, not just copying the data... If there are null sectors on > > > the CD or something then I want them to be part of the image... > > > options to mkisofs can it be done? or using dd or something? > >=20 > > yeah, you should just be able to use dd. > >=20 > > dd if=3D/dev/cdrom of=3Dexact-image.iso bs=3D2k > >=20 > > other block sizes may work too, you could experiment. I think with data > > CDs it has to be a multiple of 2k, couldn't swear to that though. >=20 > Hmmm is there a tool to check the block size of a file system? --=20 Note: See http://www.members.home.net/graywane/ for PGP information. --u3/rZRmxL6MmkK24 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iEYEARECAAYFAjrXhzQACgkQeHdFaBWUGN09YgCePJc0j9B3BWjbwiCiSPsabiQf HM0AoKYNgpt63lZP/cdDxXk01AeRzioW =F3O/ -----END PGP SIGNATURE----- --u3/rZRmxL6MmkK24-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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