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On Sun, 17 Dec 2006, Grant wrote: |
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> Does anyone know if there are any special options I should use with |
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> mkisofs to create a perfect copy of an XP CD including making it |
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> bootable? |
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If you're making copy of a CD-- if you're trying to *clone* it-- then you |
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shouldn't use mkisofs. (Recommendations for cloning are found below.) |
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In order for you to be able to use mkisofs this way, you'd have to mount |
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the CD somewhere, recursively copy its contents somewhere else, use |
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mkisofs to reconstitute those contents into a new iso9660 image, and then |
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burn that image. |
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Somewhere between the copy and mkisofs steps you'd lose whatever "magic" |
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it was that made that CD unique. If the original CD contained an El |
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Torito bootable image, then it would be gone (since the El Torito image |
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isn't accessible from the mounted iso9660 filesystem). If the iso9660 |
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image contained bad sectors on purpose, then the sectors would be |
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recreated correctly during the mkisofs. |
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|
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If you're just trying to clone an existing CD without changing any of its |
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contents, it's simpler and more reliable to do it the old fashioned way: |
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$ dd if=/dev/cdrom of=cd-image.iso |
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$ cdrecord dev=(whatever) -v cd-image.iso |
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If you really want to take a CD, change its contents, and then burn it so |
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that it's still bootable, you'd need to find a way to extract the El |
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Torito image from the original CD and restore it to the copy. |
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I rarely need to do this, so I can't offer much useful advice. If there |
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exist utilities in portage which are capable of extracting an El Torito |
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image from a CD, then I don't know about them. (Anyone?) |
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The following turns up on sourceforge; if it works for you, then you might |
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consider making an ebuild and filing a bug to have it added to the tree: |
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http://eltoritoextract.sourceforge.net/ |
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Anyway, once you extract your El Torito image from the CD, you wind up |
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with (IIRC) a 1.44 or 2.88 MB file whose contents are a dump of a regular |
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bootable floppy disk. |
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When you make your new iso9660 filesystem, you can shove this El Torito |
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image back into the new CD by passing "-b eltorito_boot_image" to mkisofs. |
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(See mkisofs(1).) From there, you burn as usual. |
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Paul Thurrott discusses this practice from a Windows perspective. Even if |
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the execution is different, the concepts remain the same: |
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http://www.winsupersite.com/showcase/windowsxp_sp2_slipstream.asp |
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|
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Joe |
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-- |
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