How to clone HDD in an External HDD in ubuntu 11.04

[J. Bakshi]

On Thu, 23 Feb 2012 11:39:01 +0530
Saikat Saha <saikat.80in at gmail.com> wrote:

> Hi,
> 
> I want to clone a HDD to another External HDD in Ubuntu 11.04. Please
> let me know the process for cloning & also the process for extract
> that clone external HDD Image to another system.
> 
> 
> Regards,
> Saikat Saha
> 


dd_rescue -v infile outfile

so 

dd_rescue -v <partition to read>  <<partition to  write>

Please read the man page once more to confirm infile outfile order.