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Date:      Wed, 5 Jul 2000 17:47:45 +0200
From:      Willem Brown <willem@brwn.org>
To:        "Michael T. Stolarchuk" <mts@off.to>
Cc:        questions@freebsd.org
Subject:   Re: read only file system?
Message-ID:  <20000705174745.B28124@snoopy.brwn.org>
In-Reply-To: <200007051538.LAA23048@off.to>; from mts@off.to on Wed, Jul 05, 2000 at 11:38:39AM -0400
References:  <200007051538.LAA23048@off.to>

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Hi,

Try using the /dev/ad1 device. /dev/ad1c refers to a slice on the
drive that refers to all of the disk space..

The "c" happens to stand for "complete".

Regards
Willem Brown

On Wed, Jul 05, 2000 at 11:38:39AM -0400, Michael T. Stolarchuk wrote:
> 
> I'd like to make copies of complete drives, starting at 
> block 0 to the last block of the physical volume.
> I used to be able to do that, but now i get EROFS errors,
> and don't know how to get around them...
> 
> These are ide drives, we bought a bunch of them to
> replicate and use to boot and run some 8 alphas...
> (we don't use the drives for performance, we've got
> fast scsi for that), so all the drives we want to
> copy onto are the same hardware devices....
> 
> We get the error when we:
> 
> 	dd if=/dev/ad0c of=/dev/ad1c 
>  or
> 	dd if=/dev/rad0c of=/dev/rad1c 
> 
> 
> i belive we're getting the EROFS cause of trying to write
> disk label data...
> 
> mts.
> 
> 
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