From owner-freebsd-usb@freebsd.org Sun Dec 1 17:22:31 2019 Return-Path: Delivered-To: freebsd-usb@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 62CC51B1E4A for ; Sun, 1 Dec 2019 17:22:31 +0000 (UTC) (envelope-from tomek@cedro.info) Received: from mail-oi1-x22c.google.com (mail-oi1-x22c.google.com [IPv6:2607:f8b0:4864:20::22c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47Qw6Z3ZrZz42Zf for ; Sun, 1 Dec 2019 17:22:30 +0000 (UTC) (envelope-from tomek@cedro.info) Received: by mail-oi1-x22c.google.com with SMTP id l136so14669919oig.1 for ; Sun, 01 Dec 2019 09:22:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cedro.info; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=aoRzL/gyZ3aClP8P5Cs+MbT9uQ2smm8ZTdO0mtzhNIs=; b=DreyDbBgH+gjMI0K9DNimbsq4BEQqCSwIv8HJzyW+/yT29xKb21MpWW8A/AvHPiyil fqLJVMOG7qkx2zg7ECy/jZO35csZkgrro+13GDxHSWlj2KHJPXrY/glsKDCZOwev2aor iEazMs+DOr0mA5jreF/RUbC7ZV5QpuC4kYnik/J8urbO4azeBJ98qly/9rk1BQDQHxqY 17Df1HWJIj9U/2MQOaWyj84Y5/k5CCZcM9mP/40exepBUlfV6hlnMxA42zFqUleYavNU CdUaLA3/MMBeztLVWAXYbsYlEBGymHDyi1M8pAyW1B/5zihBgI/LZ1DS30wxfPYqt3j2 mvvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=aoRzL/gyZ3aClP8P5Cs+MbT9uQ2smm8ZTdO0mtzhNIs=; b=dk4UHt/KwWJzAgw4uARwQBxbDG+9t7zbgm/Ph05Bx69INlIFpu0TF3Xtuj/dApdIFA Q4NtALWDPl+Cpu+fNQkfaTty67A6iXlKqNXEWGsSgjGGEHm2QDTmx/vPxAoj/v0Ski6J Zm3E62S++HX7W9iEGjHWZkseh/bAPFUMeSZrfuYnkm89JjLNZpQ1I+3c/FFaWDjSUNGA vGc1ZQKyu08Tr06sZVNRXxVn5W6Ad4ZHpzihtm5h8o6UMl697iasou5fT0Z+P+kHWLyV VAx4u1F7AxlrzQm6PZrp1QBWD3nMdKoe/ZMdibfhoGiys2JrDu3bVmBnlbhtJ/Zh6JaL ZODA== X-Gm-Message-State: APjAAAXhufGHv8ufX2amzvv8p3bSfNFrUnhrSivD5OjO3FRDBVaYZMj6 b+I9323y/PXoTEQsI/7fVOkezEuy6pc= X-Google-Smtp-Source: APXvYqwvQDN+ChWSBiA0KjZuR9dEqFnlqztrCkcUpBOppOBKSUpXrZqjgfEJ+RHXbqrhb67mvNyoHw== X-Received: by 2002:aca:c492:: with SMTP id u140mr17314534oif.80.1575220949009; Sun, 01 Dec 2019 09:22:29 -0800 (PST) Received: from mail-oi1-f171.google.com (mail-oi1-f171.google.com. [209.85.167.171]) by smtp.gmail.com with ESMTPSA id o2sm9714230oih.19.2019.12.01.09.22.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 01 Dec 2019 09:22:28 -0800 (PST) Received: by mail-oi1-f171.google.com with SMTP id b8so1039072oiy.5; Sun, 01 Dec 2019 09:22:27 -0800 (PST) X-Received: by 2002:aca:d5d3:: with SMTP id m202mr9212431oig.161.1575220947348; Sun, 01 Dec 2019 09:22:27 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Tomasz CEDRO Date: Sun, 1 Dec 2019 18:22:15 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: pendrive clone impossible ? To: FreeBSD Questions Mailing List , "freebsd-usb@FreeBSD.org" Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 47Qw6Z3ZrZz42Zf X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=cedro.info header.s=google header.b=DreyDbBg; dmarc=none; spf=none (mx1.freebsd.org: domain of tomek@cedro.info has no SPF policy when checking 2607:f8b0:4864:20::22c) smtp.mailfrom=tomek@cedro.info X-Spamd-Result: default: False [-3.88 / 15.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; R_DKIM_ALLOW(-0.20)[cedro.info:s=google]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-usb@freebsd.org]; DMARC_NA(0.00)[cedro.info]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[cedro.info:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[c.2.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; R_SPF_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_TLS_ALL(0.00)[]; IP_SCORE(-2.58)[ip: (-8.68), ipnet: 2607:f8b0::/32(-2.25), asn: 15169(-1.94), country: US(-0.05)] X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Dec 2019 17:22:31 -0000 As my previous message got moderated, just a quick summary - looks like a GEOM_PART silently discards writes to MBR with a DD when it considers MBR broken (writing to the rest of the disk is possible). I have reported this as error: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242341 -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info