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[209.85.167.180]) by smtp.gmail.com with ESMTPSA id e25sm8852388otr.53.2019.11.30.14.28.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 30 Nov 2019 14:28:18 -0800 (PST) Received: by mail-oi1-f180.google.com with SMTP id a67so10308700oib.6; Sat, 30 Nov 2019 14:28:17 -0800 (PST) X-Received: by 2002:aca:39d4:: with SMTP id g203mr6864149oia.78.1575152897319; Sat, 30 Nov 2019 14:28:17 -0800 (PST) MIME-Version: 1.0 References: <CAFYkXjkHobPfNwCL3ssL98TgUjE=jvojXACH+iR0EV-tzK-pxA@mail.gmail.com> <20191130223322.1028feab.freebsd@edvax.de> In-Reply-To: <20191130223322.1028feab.freebsd@edvax.de> From: Tomasz CEDRO <tomek@cedro.info> Date: Sat, 30 Nov 2019 23:28:04 +0100 X-Gmail-Original-Message-ID: <CAFYkXjk3HOmfXkd=L2CYpbV9=YmzP_dP1RxS37D817iW_Bqftg@mail.gmail.com> Message-ID: <CAFYkXjk3HOmfXkd=L2CYpbV9=YmzP_dP1RxS37D817iW_Bqftg@mail.gmail.com> Subject: Re: pendrive clone impossible ? To: Polytropon <freebsd@edvax.de> Cc: FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>, "freebsd-usb@FreeBSD.org" <freebsd-usb@freebsd.org> Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 47QQxw5KbYz4bxp X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=cedro.info header.s=google header.b=Hw01Plfu; dmarc=none; spf=none (mx1.freebsd.org: domain of tomek@cedro.info has no SPF policy when checking 2607:f8b0:4864:20::229) smtp.mailfrom=tomek@cedro.info X-Spamd-Result: default: False [-3.82 / 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)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@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:+]; RCVD_IN_DNSWL_NONE(0.00)[9.2.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; 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(-2.52)[ip: (-8.38), ipnet: 2607:f8b0::/32(-2.25), asn: 15169(-1.94), country: US(-0.05)] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <https://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: <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sat, 30 Nov 2019 22:28:21 -0000 It looks like either GEOM is hiding something from application/me, or pendrive itself is preventing MBR to be modified, or some sort of mix..? I guess the first is more probable because DD'ing from /dev/md0, /dev/zero, /dev/random devices always works, while DD'ing from da0.mbr file never works. If pendrive was defending itself none of them would be possible, right? The Source pendrive was MBR. This is why I did /dev/zero -> /dev/da1 just to make sure there is no GPT of any sort on the Target pendrive, nor MBR, also I could see where write was skipped. This is the first time ever dd if=/dev/da0 of=/dev/da1 did NOT copy the entire drive (the da1 attached GEOM noted inegrity checked MBR was left blank the rest seems to be there). DD reported NO ERROR.. in fact I got a standard summary on transferred bytes as operation was completed successfully. I did not count all bytes transferred because I never had to before. Is the OS hiding something from me? And from DD? Is Penrdive messing with the GEOM / OS? Because I need to finish quickly, I have used GPART to create and add partitions by hand and I am DD'ing partition by partition. So far so good. The Target pendrive is Kingston 128GB DTSE9 G2 USB3.0. Be careful with that fellow! Below is a Kingston's response cut-and-paste found on a forum where another folk tried to install bootable system on a 32GB DTSE9 G2 ;-) " The first thing to point out is that a USB drive needs to be set as a fixed drive which requires a tweak in the firmware, commonly refereed to as "flipping the RMB". Not every firmware is suitable for such an operation and since we use different flash controller providers to meet the supply and demand for our products, we cannot check the suitability of every firmware to be altered to accomodate booting from USB. Furthermore a standard USB drive is designed for sequential read and writes, rather than random read and write speeds. Booting from the USB will be very slow and will be a detriment to the product, affectively its longevity. Therefore we cannot guarantee the longevity and reliability of the drive within the warranty period, and could offer no further support in case of a drive failure. This is the reason why we at Kingston do not support the bootability of our commodity USB products. If you purchased the DTSE9G2/32GB to be used specifically for this purpose, we can only recommend that you return it to your supplier for a refund and we apologise for any inconvenience this may cause. " WELL, KINGSTON LOOKS LIKE A LOTTERY AND I FEEL LIKE A WINNER! ;-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info