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<TITLE>The Answer Guy 30: "DAO" (Disk at Once) CDR?</TITLE>
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<H4>"Linux Gazette...<I>making Linux just a little more fun!</I>"
</H4>
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<H1 align="center"><A NAME="answer">
<img src="../gx/dennis/qbubble.gif" alt="" border="0" align="middle">
<a href="./index.html">The Answer Guy</a>
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</A></H1> <BR>
<H4 align="center">By James T. Dennis,
<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
Starshine Technical Services,
<A HREF="http://www.starshine.org/">http://www.starshine.org/</A> </H4>
<p><hr><p>
<H3><img src="../gx/dennis/qbub.gif" alt="(?)" width="50" height="28"
align="left" border="0">"DAO" (Disk at Once) CDR?</H3>
<H4 ALIGN="center">Stump me!</H4>
<p><strong>From Mark Heath on 25 Jun 1998
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<br><br>
Hi there,
<br><br>
I've been searching high and low for DAO (disk at once) CDR
recording software for linux. Does any exist, Commercial or
otherwise?
<br><br>
I've email Jeff Arnold about a Linux port and he bluntly refused.
<br><br>
I've email'd HyCD who have a tool that appeared to support DAO and
claimed UNIX support. But their software didn't support DAO and
they weren't interested in a Linux port. I've informed them of this
hole in the Linux software market.
<br><br>
The closest thing that appears to be available is that Joerg
Schilling's cdrecord supports DAO MMC-3 (err i think that is the
spec) Of course my CDR (HP 4020i) isn't MMC compatible.
<br><br>
I've had a look at writing my own but it appears that every CDR has
a different command set to write in DAO mode. I think is was a
little out of my depth, since I couldn't even get the CDR to read
raw sectors.
<br><br>
So your help would be much appreciated. Thanks.
<br>Mark.
</strong></p>
<blockquote><img src="../gx/dennis/bbub.gif" height="28" width="50"
alt="(!)" border="0"
>Well, you have me stumped.
<br><br>
I don't know anything about the difference between DAO and
other forms of CDR recording. Normally, I'd spend an
hour or two hunting around on
<a href="http://altavista.digital.com/">Alta Vista</a>,
<a href="http://www.yahoo.com/">Yahoo!</a>,
Savvy Search,
<a href="http://www.dejanews.com/">DejaNews</a>, etc and
pulling out more of my hair to find out. However, I have a book to
write and a wife to feed, and it is just too close to my deadline for
me to wait until tomorrow.
<br><br>
So, what is DAO and why would you need it? What is the
difference between <TT>cdrecord</TT> and <TT>cdwrite</TT> (the one I
use with my Ricoh CDR)? Have you tried them both? What is
MMC? Who is Jeff Arnold? Who are HyCD and should we
care enough to start another Linux grassroots
"petition-the-vendor" campaign or should we just write
more code to "do-it-ourselves"?
<br><br>
I'll publish this one --- and let you and the rest of my
readership nail me with the answers. (Naturally I'll
bounce you copies of the other responses as they trickle in).
</blockquote>
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<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
>Copyright &copy;</a> 1998, James T. Dennis <BR>
Published in <I>Linux Gazette</I> Issue 30 July 1998</H5>
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