From: fred pasteck <fred_pasteck@yahoo.com>
To: linux-admin@vger.kernel.org
Subject: Producing ISO from CDROM
Date: Sun, 19 May 2002 13:59:53 -0700 (PDT) [thread overview]
Message-ID: <20020519205953.42758.qmail@web12506.mail.yahoo.com> (raw)
Hi everyone. I'm trying to dd a CDROM to produce an
ISO image using the following:
# dd if=/dev/hdc of=cdrom.iso
This works, and I can mount the resulting ISO using
the loop device, but there's an I/O error at the end:
# dd if=/dev/hdc of=cdrom.iso
dd: reading `/dev/hdc': Input/output error
1000480+0 records in
1000480+0 records out
It's apparently missing a byte or two because the MD5
sums don't match what they're supposed to be. What is
the best way to get an image from a CDROM?
Should I be using 512k blocks and the specific number
of blocks with the count= argument? My reason for
doing all of this is to verify the CDROM was burned to
correctly match that of the original ISO. Is there a
better way?
thanks.
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next reply other threads:[~2002-05-19 20:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-19 20:59 fred pasteck [this message]
2002-05-19 21:37 ` Producing ISO from CDROM James
2002-05-20 1:38 ` Michael French
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