From owner-freebsd-questions@freebsd.org  Mon Aug  3 23:44:12 2015
Return-Path: <owner-freebsd-questions@freebsd.org>
Delivered-To: freebsd-questions@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 149F29B2FA2
 for <freebsd-questions@mailman.ysv.freebsd.org>;
 Mon,  3 Aug 2015 23:44:12 +0000 (UTC)
 (envelope-from quartz@sneakertech.com)
Received: from douhisi.pair.com (douhisi.pair.com [209.68.5.179])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id EB7DF19CF
 for <freebsd-questions@freebsd.org>; Mon,  3 Aug 2015 23:44:11 +0000 (UTC)
 (envelope-from quartz@sneakertech.com)
Received: from [10.2.2.1] (pool-173-48-121-235.bstnma.fios.verizon.net
 [173.48.121.235])
 by douhisi.pair.com (Postfix) with ESMTPSA id C7C3F3F70E
 for <freebsd-questions@freebsd.org>; Mon,  3 Aug 2015 19:44:10 -0400 (EDT)
Message-ID: <55BFFCCA.5050307@sneakertech.com>
Date: Mon, 03 Aug 2015 19:44:10 -0400
From: Quartz <quartz@sneakertech.com>
MIME-Version: 1.0
To: freebsd-questions@freebsd.org
Subject: Re: USB stick and some help with it.
References: <55BF6AA0.2030802@bananmonarki.se>
 <20150804003056.094ffc57.freebsd@edvax.de> <55BFF992.6010309@gmail.com>
In-Reply-To: <55BFF992.6010309@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Aug 2015 23:44:12 -0000

> Since a CD or DVD iso was dd'ed to this stick,
> OS thinks it IS an optical ROM device - and thus
> not writable.
> Same issue happened to me and fixed the stick
> by using a linux pc to dd /dev/zero into the stick.

I'm not convinced that's his problem. Usually when that happens you get 
permission errors, not i/o errors.