Re: bit-for-bit disk copy using dd?

Hmmmm, seek and ye shall find...

I was able to use a smaller disk as my destination, a 2.2 Gig 2.5" drive.... And this worked!

I don't understand why this didn't work for even slightly larger disks, but, anyway, the "dd" command, as below, does seem to make a bit-for-bit disk copy.

-Mike


On Mon, 11 Jun 2007, Mike Cheponis wrote:

> Date: Mon, 11 Jun 2007 17:34:29 -0700 (PDT)
> From: Mike Cheponis <[email protected]>
> To: [email protected]
> Subject: bit-for-bit disk copy using dd?
> 
> Hi,
>
> I'm trying to use "dd" to copy one HD to another.
>
> The original is an old W95 disk, 1.7 GB and the destination is a blank 3 GB 
> disk.  I do (booting from install disk floppies and dropping to a prompt):
>
> $ dd if=/dev/rwd0d of=/dev/rwd1d  and wait 1,769 seconds and then it 
> finishes.
>
> But when I do this, the copy doesn't boot when I move it to the destination 
> system; it's as if there's no OS.
>
> The original disk boots just fine.
>
> So, is there some extra-special secret sauce needed to make a "clone" of a 
> disk with dd?
>
> Thanks -Mike
>