Utility needed to Verify ISO image with burned disc
in [Freeware]
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From: Mark F on 22 Feb 2010 14:57 On Fri, 19 Feb 2010 21:29:48 +0000 (UTC), Ilya Zakharevich <nospam-abuse(a)ilyaz.org> wrote: > On 2010-02-19, Mark F <mark53916(a)gmail.com> wrote: > > On Thu, 18 Feb 2010 18:56:27 +0000 (UTC), Ilya Zakharevich > ><nospam-abuse(a)ilyaz.org> wrote in part: > > > >> > What I am looking for is a utility that can compare an ISO image file > >> > (xyz.ISO) to a burned CD/DVD based on the same ISO image file. > >> > >> "A burned CD/DVD" *is* a file. At least on reasonable OSes. E.g., > >> did you try \\.\M: ? If Windows does not support this, one can just > >> make an ISO image from the disk, and use FC (or diff). > > > Sonic Record Now and some other programs that I have used include some > > identifying information in the .ISO file. Perhaps another format > > would give the same result every time I made an image, but can't Oops: I left out a word. the above should say "but I can't" > > switch from .ISO. > > I have no clue what you are talking about. "Sonic Record Now! DELUXE Build 730B75D" will save as .ISO or .GI; other programs that I have support additional image types. However, for interchange purposes I have to use only .ISO, even though it varies from run to run with the programs that I have. Note that I don't know if the Sonic or other programs that I have, including MagicISO that I have are actually making .ISO files that meet the standards - only that the created .ISO files varied from run to run when I tried things before 2008. I tried Sonic Record Now with one CD today and the .ISO file was the same for both runs, so either the differences I saw in the past were not in header/trailer identification information in the ISO files or patches that I applied in the last few years fixed the problem. Can you point me at a definition of CDROM .ISO files? I found: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-119.pdf (1987 "reprinted" in 1998) which is the standard for the on-CD data, but I couldn't find a standard for ".ISO" files, so I don't know if are actually forbidden to have identifying information. > > > In particular, making an ISO file from the same > > real or virtual CD gives different results each time > > Then the probrams you use are broken. ISO image is just a copy of the > DVD (or of "the 2048-sectors" of CD). All copies should be the same. > (And I expect that \\.M: would be always the same as well...) > > Hope this helps, > Ilya
From: za kAT on 22 Feb 2010 15:29 On Mon, 22 Feb 2010 14:00:52 -0500, Karla wrote: > On Mon, 22 Feb 2010 10:38:02 +0000, za kAT wrote: > >> On Mon, 22 Feb 2010 02:10:56 GMT, Bear Bottoms wrote: >> >>>> ? !!! >>> >>> LOL >> >> Consorting with a known troll BB? > > plonk katplonked with prejudice direct to my hummy Hamster filter -- zakAT(a)pooh.the.cat
From: Susan Bugher on 22 Feb 2010 19:07 REM wrote: >> Susan Bugher <sebugher(a)yahoo.com> wrote: >> Program: Hash >> Program: HashTab > Using Imgburn with verify checked and any hash app will definitely > verify that the image was written correctly for those who don't trust > the builtin verify in Imgburn. *IF* I read the request correctly, the OP wants to burn a copy of the *CONTENTS* of an ISO file => there will (probably) be many files on the CD or DVD that is burned. The OP then wants to verify those files to make sure they are true copies of the files that are CONTAINED WITHIN the single ISO file. That's why I recommended DVDSig. :) Susan -- Posted to alt.comp.freeware Search alt.comp.freeware (or read it online): http://www.google.com/advanced_group_search?q=+group:alt.comp.freeware Pricelessware & ACF: http://www.pricelesswarehome.org Pricelessware: http://www.pricelessware.org (not maintained)
From: Ilya Zakharevich on 22 Feb 2010 20:55 On 2010-02-22, Mark F <mark53916(a)gmail.com> wrote: > Can you point me at a definition of CDROM .ISO files? Easy: the definition follows from the intended usage: ISO file when copied to the media sector-by-2048b-sector should produce the identical disk. (Which implies that some disks cannot be mapped to ISO files - they may contain errors in 2376-byte (sp?) sectors correctable during translation to 2048b-sectors, etc.) All bytes matter during copying. So ISO files produced by reading a disk must be identical. Hope this helps, Ilya P.S. I use readcd to produce ISO files, cdrecord (or "flavors", like dvddao) to burn them.
From: REM on 23 Feb 2010 09:33
> Susan Bugher <sebugher(a)yahoo.com> wrote: >*IF* I read the request correctly, the OP wants to burn a copy of the >*CONTENTS* of an ISO file => there will (probably) be many files on the >CD or DVD that is burned. The OP then wants to verify those files to >make sure they are true copies of the files that are CONTAINED WITHIN >the single ISO file. >That's why I recommended DVDSig. :) Gotcha! Another approach is directory/folder checksum? http://support.microsoft.com/kb/841290 http://www.slavasoft.com/fsum/ |