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Date: Sat, 7 May 2005 11:29:48 +0200
From: Marc Fonvieille <blackend@freebsd.org>
To: Ilia Chipitsine <ilia@paramon.ru>
Message-ID: <20050507092948.GB622@gothic.blackend.org>
References: <20050507151735.Q27870@office.paramon.ru>
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Subject: Re: cleaning DVD+RW on Plextor PX-716a
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On Sat, May 07, 2005 at 03:18:40PM +0600, Ilia Chipitsine wrote:
> Dear Sirs,
> 
> do I need to clean RW disk before writing ?
>

No.  You should be able to "rewrite" on a DVD+RW without any blacking
operation.

> why it says errors to me:
> 
> design# burncd -f /dev/acd0 format dwd+rw
> burncd: format media type invalid: Unknown error: 0
> 

I don't know about burncd and DVD+RW but you should try growisofs,
see
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-dvds.html
and section "16.7.5 Using a DVD+RW"

Marc