From nobody Tue Jan 11 10:25:26 2022 X-Original-To: questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4C3181944C7B for ; Tue, 11 Jan 2022 10:27:56 +0000 (UTC) (envelope-from hruodr@gmail.com) Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JY6Mv3dYKz4qNB for ; Tue, 11 Jan 2022 10:27:55 +0000 (UTC) (envelope-from hruodr@gmail.com) Received: by mail-wr1-x435.google.com with SMTP id o3so32003679wrh.10 for ; Tue, 11 Jan 2022 02:27:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:subject:in-reply-to:message-id:references:mime-version; bh=Gxp0tDkTUrVrXTzrFv7265LZjp1715KWZ1u64/jeT6w=; b=OkCxMoMkYqBBwNMk8FbO8kOyUoMnJbi8ozgaEG8bRrxG6rou9tDvwOUCb9/Eyl7M4t W2kjhz56kx74Ljrzj0rcLpIIOcILkYI8bw2IuRo/cXk86phNLeagE+y6O0chF4JPh4VJ WKQlZjBGHRk/9zSuyeWeb78BZuyMdvKGvJAHAsz5m9+bsjwPAYdHCIdEFfwfZAykxGkF OlpqdhMxY82qwfD+d9ezL1noLyu0MH1STcqOJ1PcuBOG3Fa1GUG3znAY12wpSLS3tAG3 TqziJy/UT9PPHtBGBb15JTMJOhBnYSlNtfjLBfn0ypDgrkbLGTM1D85JZuvpRxtpASQF aqsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:subject:in-reply-to:message-id :references:mime-version; bh=Gxp0tDkTUrVrXTzrFv7265LZjp1715KWZ1u64/jeT6w=; b=EfOEfCfAuRs5OP+KTGvVl6cS6+4xCvqZ5jzY408T+roERowo3JktEwSR3Htro/ARaq eKABZ8K5jaeb7UjM4ggjEjlrFc18beRAy2HAWs4Z8efaeYiirY8zI+rJhROKqed9I7gb WUPMkfbX9MUWU7FmDi2AklmwH9zeaeNlXd5XOTqdWqIQvlULAnWM0WZE4oZbT6t6FLJf +qQPHKbitJ5Png+yBReuaBcAw/4JF4PxnKxFB29b0LSfoVo04rktVWqB/eN5giPgO0Xo qcj+WfWYtQtD34W+8oSGpEAAyO69sthPLLd/51/qQ3mWsZaBj6oDwSxDAyPJEu1cAMOQ NXlg== X-Gm-Message-State: AOAM530bdrcxEh6gY4HmkGGmqJOeMcxYXrBxuUehMYsY/MI1OpaL2qPr uJ83fLAxuYdLUZzVLhaEvIXMXpBNIDg= X-Google-Smtp-Source: ABdhPJz71h5pCH/TE2go/evyoVx6JLGNso4wo25IwXfmsyg0mv4GZXwlK5XtsgkEeUh/MmpRuCUIKQ== X-Received: by 2002:a05:6000:1088:: with SMTP id y8mr3341186wrw.53.1641896868032; Tue, 11 Jan 2022 02:27:48 -0800 (PST) Received: from [192.168.178.26] (dslb-188-102-039-035.188.102.pools.vodafone-ip.de. [188.102.39.35]) by smtp.gmail.com with ESMTPSA id n12sm9950375wrf.29.2022.01.11.02.27.47 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Jan 2022 02:27:47 -0800 (PST) Date: Tue, 11 Jan 2022 10:25:26 +0000 (UTC) From: Roderick To: questions@freebsd.org Subject: Re: dd and mbr In-Reply-To: <20220111111141.4bd7a6cb@archlinux> Message-ID: <99901737-c828-11f9-d694-90c29e61f967@gmail.com> References: <4af920fc-eff1-a92e-d36e-1ba97079864c@gmail.com> <20220111111141.4bd7a6cb@archlinux> List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 4JY6Mv3dYKz4qNB X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b=OkCxMoMk; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of hruodr@gmail.com designates 2a00:1450:4864:20::435 as permitted sender) smtp.mailfrom=hruodr@gmail.com X-Spamd-Result: default: False [0.18 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RECEIVED_SPAMHAUS_PBL(0.00)[188.102.39.35:received]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.34)[-0.337]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.54)[0.542]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_LONG(0.97)[0.975]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::435:from]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N No. That does not work. That is why I am asking. bs=512 is the default. Without count is more than with count. How did you come to the idea that that would work? Rod. On Tue, 11 Jan 2022, Ralf Mardorf wrote: > On Tue, 11 Jan 2022 10:02:26 +0000 (UTC), Roderick wrote: >> dd if=/dev/zero of=/dev/da0 > > dd if=/dev/zero of=/dev/da0 bs=512 count=1 > > or > > dd if=/dev/zero of=/dev/da0 bs=512 > > ? > >