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Date:      Sun, 22 Dec 2002 19:25:47 -0500
From:      Mike Jeays <mj001@rogers.com>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Copying a CD
Message-ID:  <3E06580B.10001@rogers.com>
References:  <3E05272A.50201@rogers.com> <20021222211700.GB16677@sylvester.dsj.net>

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David S. Jackson wrote:

>On Sat, Dec 21, 2002 at 09:44:58PM -0500 Mike Jeays <mj001@rogers.com> wrote:
>  
>
>>How can I use dd to copy a  CD?   The command below does not
>>work - I presume I have failed to understand something.  I have tried other
>>devices begining "acd".
>>
>>209 ~# dd if=/dev/acd0c of=x1
>>dd: /dev/acd0c: Invalid argument
>>0+0 records in
>>0+0 records out
>>0 bytes transferred in 0.000219 secs (0 bytes/sec)
>>210 ~#
>>211 /dev# ls -l acd*
>>crw-r-----  4 root     operator  0,13568 Dec 21 2002 19:33 acd0a
>>crw-r-----  4 root     operator  0,13568 Dec 21 2002 19:33 acd0c
>>212 /dev# ls -l racd*
>>crw-r-----  4 root     operator  0,13568 Dec 21 2002 19:33 racd0a
>>crw-r-----  4 root     operator  0,13568 Dec 21 2002 19:33 racd0c
>>213 /dev#
>>    
>>
>
>What kind of data is on the CD?  Whether or not you can/should use dd
>depends on what you're trying to do and with what kind of CD.  Make sure
>you read chapter 12.5 of the FreeBSD handbook.  
>
>  
>
It is a data CD. "bs=2048" was what I needed.  My thanks to all who made 
suggestions.



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