dd is so slow on my SCSI disc

Ted Mittelstaedt tedm at toybox.placo.com
Tue Aug 23 06:28:43 GMT 2005


dd works a lot better if you set the buffersize to higher than
the default.

Ted

>-----Original Message-----
>From: owner-freebsd-questions at freebsd.org
>[mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Danny MacMillan
>Sent: Monday, August 22, 2005 5:58 PM
>To: Sebastian Pahlke
>Cc: freebsd-questions at freebsd.org
>Subject: Re: dd is so slow on my SCSI disc
>
>
>Sebastian Pahlke wrote:
>> Hi all,
>>
>> I'm trying to "clean" a disc before selling them:
>>
>> dd if=/dev/zero of=/dev/da0
>
>You may want to consider using /dev/random instead of, or in combination
>with, /dev/zero.  Zeroing out a disk isn't a significant barrier to
>forensic analysis.
>
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