Date: Mon, 5 Apr 2004 14:50:24 -0500 From: Adam Fabian <afabian@turingmachine.dyndns.org> To: "J.D. Bronson" <jbronson@wixb.com> Cc: freebsd-questions@freebsd.org Subject: Re: diskcopy (dd) on 5.2.1 ? Message-ID: <20040405195024.GA70913@turingmachine.dyndns.org> In-Reply-To: <6.1.0.5.2.20040405142312.00a9f540@localhost> References: <6.1.0.5.2.20040405142312.00a9f540@localhost>
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On Mon, Apr 05, 2004 at 02:32:37PM -0500, J.D. Bronson wrote: > I have 2 "100% identical SCSI drives" on my freebsd machine.. > > What command can I do in freebsd to 'copy' one drive to another > completely (including the bootsectors and partition table) ? > > da0 > da1 dd if=/dev/rda0 of=/dev/rda1 bs=16k seems reasonable to me. I have a couple of identical IDE drives; performance doesn't pick up much after 16k blocks, but 16k is many times faster than the default of 512 bytes.
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