Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: comp.unix.ultrix
Subject: Re: How to duplicate the Ultrix distribution TK50's?
Message-ID: <22179@cbmvax.commodore.com>
Date: 5 Jun 91 18:30:18 GMT
References: <2378@netmbx.UUCP>
Reply-To: grr@cbmvax.commodore.com (George Robbins)
Distribution: comp
Organization: Commodore, West Chester, PA
Lines: 15

In article <2378@netmbx.UUCP> weis@netmbx.UUCP (Dietmar Weis) writes:
> It can't be done with dd, there must be something special.
> (I tried it with bs=10k (good for layered products tapes, but not for
> at least the supported subset vol. 1.))

The files on the tape have differing blocksizes.  You could do it with
dd as a "tape-to-tape" copy, since this preserves blocksizes (assuming
that you specify something large enough).  However if you use disk as
an intermediate storage, you need to specify the correct blocksize for
each file output to the tape.  I believe there are some "tapecopy"
programs floating around that can do this.
-- 
George Robbins - now working for,     uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing:   domain: grr@cbmvax.commodore.com
Commodore, Engineering Department     phone:  215-431-9349 (only by moonlite)