From: Samurai Chef (samuraichefgmail.com)
Date: Wed Aug 02 2006 - 19:29:04 CDT

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On 8/1/06, Shane J Pearson <shanejpnetspace.net.au> wrote:
> Hi Chris,
>
> On 2006.08.01, at 2:00 PM, Chris Zakelj wrote:
>
> > Went back about two years in the MARC archives with the terms 'copy
> > drive' (oddly enough, 'dd' itself wouldn't work), and got plenty of
> > linux examples on Google (that pretty much say what I propose anyway)
> > but no luck... I'm hoping to find a faster way to create an image
> > of one
> > drive (a Samsung MP0402H, 40G notebook, to be specific) onto an
> > identical drive than using:
> >
> > # dd if=/dev/rwd0c of=/dev/rwd1c bs=1m
> >
> > Hardware to be used in the copy is an i586/166, Intel 430VX
> > chipset. I
> > vaguely recall hearing that placing the drives on separate IDE
> > channels
> > would help, but any and all other pointers, cluesticks, and proddings
> > are welcome.
>
> Do you have lots of drives to clone like this? This thread could take
> longer than the copying of a drive.
>
> I occasionally dd copy my 100GB laptop drive to an external firewire
> drive, using a FreeBSD install CD [1]. Only takes about 1 hour
> including compressing with gzip.
>
> Backup:
> dd bs=64k if=/dev/{raw_drive} | gzip | split -b 50m - backup.dd.gz.
>
> I split the files into 50m chunks because they fit well on CD's and
> DVD's and I don't have problems trying to burn or copy the files to
> something which has file size limits.
>
>
> Restore:
> gzcat backup.dd.gz.* | dd bs=64k of=/dev/{raw_drive}
>
>
> If you want, you can always substitute the raw_drive for a slice and
> just backup slices.
>
>
> Shane
>
> [1] Only using FreeBSD for this because it supported the new ATA and
> firewire chipsets on my VAIO. ; )
>
>

I've always tended to go with G4U for tasks like this. It's slow
(because of the hardware I tend to use it on) but basically does the
same thing as dd.

see http://www.feyrer.de/g4u/

~samuraichef

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