does this work from hd to external usb disk?

2007/10/7, Brian Litzinger <brian@worldcontrol.com>:
>
> On Sun, Oct 07, 2007 at 12:49:11AM -0400, Peter Davoust wrote:
> > This may be a little noobish, and it may have been said, but can't you
> > just install the new drive, partition it identically to the original
> > drive and then...
> >
> > dd if=/dev/hda1 of=/dev/hdb1
> > dd if=/dev/hda2 of=/dev/hdb2
> >
> > so on and so forth until you've got everything copied? Or event just
> >
> > dd if=/dev/hda of=/dev/hdb
> >
> > Wouldn't that work?
>
> The latter works fine in my experience.  I do it regularly.
>
> The downside, is that cloning a 750GB drive takes a while
> as it duplicates everything including unused sectors.
>
> Things like clonezilla just copy the "used"/active sectors.
>
> A popular way is to use sfdisk.  I do not remember the exact
> syntax, but a pair of sfdisk commands can transfer the partition
> information directly between two drives.
>
> Then use rsync to move the data across.
>
> You may have to run grub setup on the new disk too.
>
> --
> Brian Litzinger
> --
> gentoo-amd64@gentoo.org mailing list
>
>


-- 
dott. ing. beso