Re: how to make a disc replica with dd ?

[Rakhesh Sasidharan <rakhesh@cse.iitd.ernet.in>]

On Tue, 13 Mar 2001, Rick wrote:

> 
> Hello.
> I have just done a big job on a machine and I want to replicate the whole
> disc on an other OpenBSD machine, not same disc but about same size.
> Can I do it with dd ??
> Which are the preferred block size I have to use ?
> Do I have to do simply
> 
> dd if=/dev/wd0c of=/dev/wd1c

Well, I am not sure of any answer ... but, if you check up /etc/security,
you shall find a block which has the stuff you are looking for.  Search
for the variable ALTROOT -- near it, you will find the dd command being
used for replicating a partition.  

I am not on my OpenBSD machine right now -- else I could have helped more.

> Do I have to do it single user and no disc mounted rite ?
No, *I don't think* so.  

> OF course once this is succesfull the target disk will boot rite ?
Should ... else, go thru the installboot manpage.

Regards.
__
Rakhesh Sasidharan	rakhesh at cse.iitd.ac.in