From nobody Tue Jan 11 10:11:41 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 29663193ECBD for ; Tue, 11 Jan 2022 10:11:53 +0000 (UTC) (envelope-from ralf-mardorf@riseup.net) Received: from mx1.riseup.net (mx1.riseup.net [198.252.153.129]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mx1.riseup.net", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JY61N0D6wz4kgb for ; Tue, 11 Jan 2022 10:11:51 +0000 (UTC) (envelope-from ralf-mardorf@riseup.net) Received: from fews1.riseup.net (fews1-pn.riseup.net [10.0.1.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mail.riseup.net", Issuer "R3" (not verified)) by mx1.riseup.net (Postfix) with ESMTPS id 4JY61D5y4mzF4pn for ; Tue, 11 Jan 2022 02:11:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=riseup.net; s=squak; t=1641895904; bh=1GynRDxzN7sVSdMXxJC1b9kuqGFQlskcO5NMshPIdq0=; h=Date:From:To:Subject:In-Reply-To:References:From; b=b7EuNhLBfKKOu5Vy4G5W7YDtMyU0/K/GT9URCs6bB3mxtkrLTasPXFbLTr+u0ELec xNLOvMjsNbHqL9pWaZYJZhMmS0l+wOyqMjPUFjs4/tCZQEZkltjJ8aQIwJKwKgBN+0 Hdw1aUP+v7dVfMflrQnwWkB4IESUJ/txkhnsC9j8= X-Riseup-User-ID: B2A54DC889A67F3DDD43AE2A173CE8087FC1148147D54CD94E625E01A2F808DE Received: from [127.0.0.1] (localhost [127.0.0.1]) by fews1.riseup.net (Postfix) with ESMTPSA id 4JY61D1RfZz5vkm for ; Tue, 11 Jan 2022 02:11:44 -0800 (PST) Date: Tue, 11 Jan 2022 11:11:41 +0100 From: Ralf Mardorf To: questions@freebsd.org Subject: Re: dd and mbr Message-ID: <20220111111141.4bd7a6cb@archlinux> In-Reply-To: <4af920fc-eff1-a92e-d36e-1ba97079864c@gmail.com> References: <4af920fc-eff1-a92e-d36e-1ba97079864c@gmail.com> 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 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4JY61N0D6wz4kgb X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=riseup.net header.s=squak header.b=b7EuNhLB; dmarc=pass (policy=none) header.from=riseup.net; spf=pass (mx1.freebsd.org: domain of ralf-mardorf@riseup.net designates 198.252.153.129 as permitted sender) smtp.mailfrom=ralf-mardorf@riseup.net X-Spamd-Result: default: False [-2.60 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[riseup.net:s=squak]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[198.252.153.129:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; DWL_DNSWL_LOW(-1.00)[riseup.net:dkim]; RCVD_COUNT_THREE(0.00)[3]; NEURAL_SPAM_SHORT(1.00)[1.000]; DKIM_TRACE(0.00)[riseup.net:+]; DMARC_POLICY_ALLOW(-0.50)[riseup.net,none]; NEURAL_HAM_LONG(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_NOT_FQDN(0.50)[]; ASN(0.00)[asn:16652, ipnet:198.252.153.0/24, country:US]; RCVD_TLS_ALL(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[198.252.153.129:from] X-ThisMailContainsUnwantedMimeParts: N 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 ?