From nobody Sun Oct 02 23:19:07 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 4Mgg036ZgVz4dpwv for ; Sun, 2 Oct 2022 23:19:15 +0000 (UTC) (envelope-from jamie@catflap.org) Received: from donotpassgo.dyslexicfish.net (donotpassgo.dyslexicfish.net [IPv6:2001:19f0:300:2185:123::1]) by mx1.freebsd.org (Postfix) with ESMTP id 4Mgg024zvhz3qbT; Sun, 2 Oct 2022 23:19:14 +0000 (UTC) (envelope-from jamie@catflap.org) X-Catflap-Envelope-From: X-Catflap-Envelope-To: freebsd-hackers@FreeBSD.org Received: from donotpassgo.dyslexicfish.net (donotpassgo.dyslexicfish.net [104.207.135.49]) by donotpassgo.dyslexicfish.net (8.14.5/8.14.5) with ESMTP id 292NJ8cu044190; Mon, 3 Oct 2022 00:19:08 +0100 (BST) (envelope-from jamie@donotpassgo.dyslexicfish.net) Received: (from jamie@localhost) by donotpassgo.dyslexicfish.net (8.14.5/8.14.5/Submit) id 292NJ7xE044189; Mon, 3 Oct 2022 00:19:07 +0100 (BST) (envelope-from jamie) From: Jamie Landeg-Jones Message-Id: <202210022319.292NJ7xE044189@donotpassgo.dyslexicfish.net> Date: Mon, 03 Oct 2022 00:19:07 +0100 Organization: Dyslexic Fish To: leres@FreeBSD.org, grahamperrin@FreeBSD.org, freebsd-hackers@FreeBSD.org Subject: Re: Block sizes for dd(1) to USB memory sticks (flash drives) for installers for FreeBSD References: <1cede94a-c114-17fa-a81c-bb58c2b5879c@freebsd.org> <3ea35f4d-8efa-cf93-d462-0d8ce997b7aa@freebsd.org> <49157a68-f015-d7fb-8b78-759e1b089359@freebsd.org> <1b5ba983-db7f-9387-3b09-e07cb6895f82@freebsd.org> In-Reply-To: <1b5ba983-db7f-9387-3b09-e07cb6895f82@freebsd.org> User-Agent: Heirloom mailx 12.4 7/29/08 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 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7 (donotpassgo.dyslexicfish.net [104.207.135.49]); Mon, 03 Oct 2022 00:19:08 +0100 (BST) X-Rspamd-Queue-Id: 4Mgg024zvhz3qbT X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=pass (policy=none) header.from=catflap.org; spf=pass (mx1.freebsd.org: domain of jamie@catflap.org designates 2001:19f0:300:2185:123::1 as permitted sender) smtp.mailfrom=jamie@catflap.org X-Spamd-Result: default: False [-3.70 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.998]; DMARC_POLICY_ALLOW(-0.50)[catflap.org,none]; R_SPF_ALLOW(-0.20)[+mx:dyslexicfish.net]; RCVD_NO_TLS_LAST(0.10)[]; MIME_GOOD(-0.10)[text/plain]; MLMMJ_DEST(0.00)[freebsd-hackers@FreeBSD.org]; R_DKIM_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; FREEFALL_USER(0.00)[jamie]; HAS_ORG_HEADER(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_NONE(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ASN(0.00)[asn:20473, ipnet:2001:19f0::/38, country:US] X-ThisMailContainsUnwantedMimeParts: N In the past, I've had better than expected results using sysutils/ddrescue. Do you know how that compares to recoverdisk? Cheers, Jamie