Date: Sat, 11 Mar 2006 20:49:14 -0800 From: Glenn Dawson <glenn@antimatter.net> To: Joseph Vella <satyam@sklinks.com>, freebsd-questions@freebsd.org Cc: Wojciech Puchar <wojtek@tensor.3miasto.net>, Grant Peel <gpeel@thenetnow.com> Subject: Re: dd - cloning a disk. Message-ID: <7.0.1.0.2.20060311204721.039690f8@antimatter.net> In-Reply-To: <200603111529.44329.satyam@sklinks.com> References: <001901c64517$9d891950$6701a8c0@GRANT> <20060311234213.N68417@chylonia.3miasto.net> <200603111529.44329.satyam@sklinks.com>
next in thread | previous in thread | raw e-mail | index | archive | help
At 03:29 PM 3/11/2006, Joseph Vella wrote: >On Saturday 11 March 2006 14:43, Wojciech Puchar wrote: > > > > > > Here is a simple (I think!) question for the I/O savy among you: > > > > > > If I had two identical disks, say, 73 GB Seagate 10K SCSIs, one > completely > > > operational fully setup FreeBSD with all the trimmings, and the other >blank, > > > or perhaps loaded but no longer usable, is 'dd' and appropriate tool to > > > completely clone the Good disk to the not so good > disk....therefor making >the > > > second disk identical to the first? Bootable and all? > > > > yes > > > > dd if=/dev/firstdisk of=/dev/seconddisk bs=64k > > > > and yes it is bootable, but if you boot from second disk, FreeBSD kernel > > will mount root from first disk anyway, unless you will reconfigure it. > > > >Would this also work to copy CDs? If so, does it matter what os >and/or format >they would have? You can get an image of a data cd with: dd if=/dev/acd0 of=foo.iso bs=2048 You can then use burncd to make a copy. Also note that the block size is important here. -Glenn >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?7.0.1.0.2.20060311204721.039690f8>