From owner-freebsd-questions Mon Sep 30 16:39:13 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A924237B401 for ; Mon, 30 Sep 2002 16:39:11 -0700 (PDT) Received: from letos.cs.uh.edu (letos.cs.uh.edu [129.7.240.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id A321B43E65 for ; Mon, 30 Sep 2002 16:39:10 -0700 (PDT) (envelope-from pdesai1@cs.uh.edu) Received: from themis.cs.uh.edu (themis [129.7.240.5]) by letos.cs.uh.edu (8.11.6+Sun/8.11.6) with ESMTP id g8UNd9o15719 for ; Mon, 30 Sep 2002 18:39:09 -0500 (CDT) Received: from localhost (pdesai1@localhost) by themis.cs.uh.edu (8.11.6+Sun/8.11.4) with ESMTP id g8UNd9Q01955 for ; Mon, 30 Sep 2002 18:39:09 -0500 (CDT) X-Authentication-Warning: themis.cs.uh.edu: pdesai1 owned process doing -bs Date: Mon, 30 Sep 2002 18:39:09 -0500 (CDT) From: "Pranav A. Desai" To: Subject: Re: how to use 'dd' to create image of a hard drive? In-Reply-To: <3.0.5.32.20020930181112.028ece30@mail.sage-one.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi ! Thank you all for your prompt replies. You have said in your replies that the bs parameter should be set appropriately. Is there a way to find out appropriate block size, or any reasonable size should do, like 1k or 4k. I am asking because I tried it a few weeks ago and I was unable to mount the new drive let alone boot from it. Mostly I must have done something wrong. I dont have access to another drive or else I could have tried it again. Let me know if any block size will do or should it be specific. Thanks -Pranav ******************************************************************* Pranav A. Desai Home :- (937) 294 1381 ******************************************************************* On Mon, 30 Sep 2002, Jack L. Stone wrote: > At 04:02 PM 9.30.2002 -0700, David Smithson wrote: > >> >> >Hi all! > >> >> > > >> >> > Can I use something like > >> >> > > >> >> >dd if=/dev/ad0 of=/dev/ad1 > > > >Yes. This will work fine. > > > >> NO! An entire image is taken of the ad0 and no labeling is necessary. It > >is > >> bootable already. > >> > >> Best regards, > >> Jack L. Stone, > >> Administrator > > > >I agree with Jack. However, if you want to boot from it as "ad1" or > >whatever, I think you'll have to tweak your bootloader settings a little > >bit. Right? > > > > Yes, or if it is for a backup for ad0, just switch the cable and reboot..... > > Best regards, > Jack L. Stone, > Administrator > > SageOne Net > http://www.sage-one.net > jackstone@sage-one.net > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message