At 02:37 PM 8/17/02 -0400, Chuck Gelm wrote:
>Hi, Ray:
>
> Thanks.
>Windows hardware check:
>My existing windows cd-burn software can burn the
>Slackware8.0 'install.iso' to blank media and it boots & works fine.
> ;-)
>
> Using my Easy-cd-creator v4.02 generates an image file of
> 112 bytes and fails with an error about creating file
>000000001.TMP :-(
>^^^^^^^^^^^^^ something like that
>
> Using 'dd if=/dev/cdrom of=./filename.iso' generates a file of
> 1,699,840 bytes. :-|
>
> Yet, 'tar -czvf filename.tar.gz /cdrom/*', generates a filesize of
>561,982,106 bytes. ;-)
>
> The 'dd' command seems to work with other, friendlier, CD-ROMs.
>(filesize seems appropriate,
> but I haven't burned a CD from them, yet>)
>
>:-) So, it is that easy to create .iso images! :-)
>
> So, it seems that 'dd' is not creating the expected output.
>What does this indicate.
At a *guess*, the CD is not pure iso, but instead has a small "outside
edge" track that an iso imager reads rather than the full disk. That track
then has some second-stage loader that lets you read the rest of the disk.
Or maybe the dummy track is just junk and the core of the disk is true iso.
I haven't actually encountered this sort of setup, but I'm reasoning by
analogy to that lamebrain system for "protecting" music CDs from ripping
software that involved putting a small, bogus track on the outside edge.
In the music case, the workaround was easy, since you didn't need that
track. Here it is probably harder and may involve specialized understanding
of the specific disk in question (at least is that small filesystem is
important to running the disk). In any case, Linux is likely to be no more
successful here than Windows, at least using its ordinary tools. Sorry.
One possibility ... if you can mount the disk and see its directories (the
tar results imply that you can), try
mkisofs -J -r -o some_filename.iso /cdrom/*
This will put the contents of the CD into a true iso image that you can
burn. Whether the programs there will run from that burned image ... well,
your guess is as good as mine, but I'd not be optimistic, since it sounds
like you are encountering some form of deliberate copy protection.
--
-------------------------------------------"Never tell me the odds!"--------
Ray Olszewski -- Han Solo
Palo Alto, California, USA [EMAIL PROTECTED]
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