From nobody Fri Sep 30 16:33:55 2022 X-Original-To: freebsd-hackers@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 4MfG5K4RZYz4f6Rb for ; Fri, 30 Sep 2022 16:33:57 +0000 (UTC) (envelope-from leres@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (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 (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4MfG5K3vCTz3qxy; Fri, 30 Sep 2022 16:33:57 +0000 (UTC) (envelope-from leres@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1664555637; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yNwpZOJ3bwvoSCOH7BCFWkptPCwVX9hNZUFNCUSxD38=; b=F6PAn8CCEWMFII/cr1Vfnr2Xgg25lU8QQYDK5zfmWK6+YNAnJz40F8+Gf2B3Xyx0aza8uV naWqi/8Q8+nKvyVDrRTIB+tsVaSixVwSgnm8CK5GK/2A6jw/iofKjn5I9CCBq/7n8mkOlu UQU5y7RtUSArsBMKkbaq3ZUA6TwTyuVcipj30bLl77vAinNRpBt+KuQqiOGiyOFdKsEJhO 3kbkcQcIY0DkXqK/3KgH4ujwzhiONjYyLkaquzSEuVqXcXsfo12oa4fwFofopwJNdfBx2p gCuDJ65Fb4XyxRWmHlW38geTVCRmCw3N8k7ju9n6xJNCgNWtGkttycM3DDW0rw== Received: from [IPV6:fd:1965::2] (unknown [IPv6:2600:1700:a570:e20:f2ad:4eff:fe09:150e]) (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 did not present a certificate) (Authenticated sender: leres) by smtp.freebsd.org (Postfix) with ESMTPSA id 4MfG5K0t1wz12x7; Fri, 30 Sep 2022 16:33:56 +0000 (UTC) (envelope-from leres@freebsd.org) Message-ID: <3ea35f4d-8efa-cf93-d462-0d8ce997b7aa@freebsd.org> Date: Fri, 30 Sep 2022 09:33:55 -0700 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 Subject: Re: Block sizes for dd(1) to USB memory sticks (flash drives) for installers for FreeBSD Content-Language: en-US To: Graham Perrin , freebsd-hackers@freebsd.org References: <1cede94a-c114-17fa-a81c-bb58c2b5879c@freebsd.org> From: Craig Leres In-Reply-To: <1cede94a-c114-17fa-a81c-bb58c2b5879c@freebsd.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1664555637; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yNwpZOJ3bwvoSCOH7BCFWkptPCwVX9hNZUFNCUSxD38=; b=Sj7GaYVPfBYoXA7aKPpknyJMkdu5pyS+4jqv3oN4UhovbGEuqVT2PYDnss2gGnE95dj+iE YJPGsSyXKZZPlPCF4AEEl6htUj1vz+zDVq4Qn4c52wc1UkjZvp5cbcTDw+oZi9obKOctXZ AjSEHOLDtY1rhE1rgRgBI4olbD4wCEkOBMf4w/gUF7i/dT4Z4x9BQe5xpk5Bfkvy2FrI+Y fGGv4OmErDtNGCDt0J9iMKzPKU41V+wc/N36VsxuCpRtFpM9qMeP0wRm89ItIsDvXyByjt wDgh+tALIQMbk03OEjPwUaCCAmMH5kiDTHVLtZfNQ2oSJO2JfewFPYA41EmrLw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1664555637; a=rsa-sha256; cv=none; b=p/mJ69rTAwBiKh401Ms2UfSTACB7dXAg5QQxQez/4ba/8UpFVw4EdvAv6BGFqKf0/A9JHg hQDG09zuv8iXzPEKVGYaHFXkLsz3Rbws919vwnIZxxKNZEL0x76jJ+q4XmsixebQCY6FBG zmqZCUEQ3NbYNSK5WRHLDXnGOjI0P0VVLZqCt5ll6AKTeUn2Z5xoVxP/PSaMxz9eREhlhi pCp4Rg1bgXmRhVTKkZmqfJ/v+O4aVCx+BWpE/3DpgtO+BFt2oGTjf20FgwyC4aa71QH9AX Lbq3jMqSZc6rDSXBRVR+YG0FpWgarEid2yB3jDsu5Mk0pu3HfJACTGJPPnpw0Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N On 9/30/22 00:26, Graham Perrin wrote: > and > elsewhere: > > bs=1m > > Why so small? > > I find things much faster with a larger block size. Is this my imagination? I rarely use dd after learning about recoverdisk(1). But I see why dd would be referenced in installation instructions (e.g. switching from a linux distro). Craig