dd is so slow on my SCSI disc
Emanuel.strobl at gmx.net
Tue Aug 23 02:47:49 GMT 2005
Am Dienstag, 23. August 2005 04:29 CEST schrieb Mike Jeays:
> On Mon, 2005-08-22 at 20:57, Danny MacMillan wrote:
> > 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.
> Using /dev/random is much, much slower than /dev/zero.
He quoted correctly and his statment wasn't about speed, but about the
purpose of the original action; To "clean" discs before selling....
I'm not sure if single-writing nulls or randoms makes any difference; I
think it doesn't, but his post wasn't incorrect!
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-questions/attachments/20050823/ee82d5bd/attachment.bin
More information about the freebsd-questions