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To: "Drew Tomlinson" <drew@mykitchentable.net>
Cc: <questions@FreeBSD.ORG>
Subject: Re: How To Create A RAW ISO With An IDE CD-R Drive?
References: <000501c1affa$0f4ffe30$0301a8c0@bigdaddy>
From: swear@blarg.net (Gary W. Swearingen)
Date: 07 Feb 2002 10:32:28 -0800
In-Reply-To: <000501c1affa$0f4ffe30$0301a8c0@bigdaddy>
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"Drew Tomlinson" <drew@mykitchentable.net> writes:

> I'm kind of in a time pinch here and haven't had quick success with
> Google.  Can some one please tell me how I can create a ISO file of a
> CD?  I want to make an exact duplicate (errors, and all) so I need to
> make a RAW image.  Is this possible?  What would the command be?

Something like

    dd if=/dev/acd0c of=ISO bs=2k

should do it, but I've noticed that it sometimes gets an extra block at
the end which wasn't part of the original ISO file.  If you know the
original size, you're in luck (either chop extra off, or use dd's
count argument), otherwise I suspect the extra block will be harmless
for most purposes.

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