Les Mikesell wrote:
On Tue, 2006-02-14 at 12:36, Mikkel L. Ellertson wrote:
I need to make an identical bit-for-bit transfer of a hard disk from a
*REALLY* slow box to a faster box.
1- There are no security issues --plugging one box directly into the other.
2- I need to prove/document the copy is identical to the original.
3- I want to do it as efficiently as possible.
4- I "own" both boxes.
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Has anyone used dcfldd ?? Is this a better tool than dd ??
http://dcfldd.sourceforge.net/
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Any time-tested commands/flags/scripts would be greatly appreciated.
Best wishes to everyone,
Andrew
If you are going from one box to another, then dd type tools are
not the right tool for the job. You may want to take a look at
Ghost 4 Linux ( http://freshmeat.net/projects/g4l/ ) This also
has the advantage that the drives are not mounted during the
copy, so you do not have to worry about something changing while
the drive is being copied. You do NOT want to do a bit-for-bit
copy of a mounted drive!
You can use dd even across machines if you can boot a
run-from-CD distro that has ssh like knoppix. Set a root
password and start the ssh server on the remote box
and use a command like:
dd if=/dev/hda |ssh remote_ip dd of=/dev/hda
However, to use dd the disks must be the same size. If this
Actually, they need to be identical drives. Just being
the same size is not enough.
[snip]
Mike
--
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