thank you for your response;
what i want the result to be is that i have an internal backup of my 
entire drive , in case hda fails someday.
what i would like to do is, once the whole drive (hda) is copied to hdb, 
to periodically just do updates so that it stays a mirror of hda. is 
that possible?  i don't plan on ever using hdb, and hdb is a large as hda.
so if i do ;

# dd if=/dev/hda of=/dev/hdc bs=4k

as you suggested (changing hdc to hdb, of course)
would i need to partition the drive (hdb) first??? or just format it?

i have never booted from a live CD so i guess i have to dig one out of 
the drawer of software, i know i have at least one, i think knoppix and 
maybe mepis??.
betty i
> : Sat, 18 Nov 2006 10:05:53 -0700
> From: "Eric \"Shubes\"" <plug@shubes.net>
> Subject: Re: dump on to hdb
>
>   
> I think that dd would be better suited.
>
>   
>
> What do you want the result to be? How do you plan to use the new and old
> drives?
>
> If you want your new drive to look exactly like the old one, and the new one
> is at least as large as the old one, you can easily do this with dd (new
> drive is hdc in this example):
>
> # dd if=/dev/hda of=/dev/hdc bs=4k
>
> Be sure that you boot from a Live CD before doing this, as both drive should
> not be mounted when doing this command.
>
>   
 
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