*BSD News Article 75666


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: disklabel for ST15230N under 2.1.x-RELEASE
Date: 7 Aug 1996 22:03:00 GMT
Organization: Private BSD site, Dresden
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jin@gracie.lbl.gov (Jin Guojun[ITG]) wrote:

> >>>	dd if=/dev/rsd0 of=/dev/rsd1 bs=64k
> >>>
> >>>Of course, this assumes number_of_blocks(sd1) >= number_of_blocks(sd0).
> >>
> >>Apperently, it is not.
> >
> >If the disks have different sizes, then copying the labels will probably
> >give a bogus label.

> No No. I am talking the same type of disks. All the disks are in the
> same type Seagate HAWK 4.3 ST15230N

You are self-condradictionary.  Three postings before, you wrote that
they are ``apparently not'' identical.

> The only difference is that you use bs=64k, I used bs=1024k.
> For my understanding, it should not make different, should it?

It's not different, but doesn't gain you anything either, since
physio() slices the requests into chunks of 64 KB anyway.

Have you really been using the abovementioned device nodes?  Or did
you use ``/dev/sd0'' or ``/dev/rsd0c'' or something else?  *This*
could be a difference.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)