*BSD News Article 70311


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From: j@ida.interface-business.de (J Wunsch)
Newsgroups: comp.unix.bsd.bsdi.misc
Subject: Re: IDE to SCSI disk dup
Date: 6 Jun 1996 10:58:51 GMT
Organization: interface business GmbH, Dresden
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Message-ID: <4p6dlb$l7i@innocence.interface-business.de>
References: <4p4a85$bnd@shiva.usa.net>
Reply-To: joerg_wunsch@interface-business.de (Joerg Wunsch)
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steve@smallweb.com (Steve Suhre) wrote:

> I will be upgrading a server from an IDE disk to SCSI. I would like to
> install the SCSI drive and copy directly from disk to disk, the IDE 
> drive will then be moved off to another machine. Will "dd" work with
> the respective drives listed for "if" and "of"? Is there another
> recommended way?

dd is only useful if both disks have the exact same geometry, at least
the same total number of sectors.

Normally, it's better to setup the new disk (i think disksetup is your
friend here), and then copy filesystem-wise.  This can be done with:

	mount /dev/sd<whatever> /mnt
	dump 0f - /dev/rXXX<olddisk> | (cd /mnt; restore rvf -)

Mount each of your new file systems in turn to /mnt, and repeat the
above.  You can finally remove the file ``restoresymtable'' in each of
your new file systems.  It's a leftover from restore(8) that would
have been used in case of an incremental restore.

-- 
J"org Wunsch					       Unix support engineer
joerg_wunsch@interface-business.de       http://www.interface-business.de/~j