From owner-freebsd-questions@freebsd.org Sun Oct 25 18:40:01 2020 Return-Path: Delivered-To: freebsd-questions@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 D4EEE455A48 for ; Sun, 25 Oct 2020 18:40:01 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Received: from holgerdanske.com (holgerdanske.com [184.105.128.27]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "www.holgerdanske.com", Issuer "www.holgerdanske.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CK6G86vWCz4PB5 for ; Sun, 25 Oct 2020 18:40:00 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Received: from 99.100.19.101 (99-100-19-101.lightspeed.frokca.sbcglobal.net [99.100.19.101]) by holgerdanske.com with ESMTPSA (TLS_AES_128_GCM_SHA256:TLSv1.3:Kx=any:Au=any:Enc=AESGCM(128):Mac=AEAD) (SMTP-AUTH username dpchrist@holgerdanske.com, mechanism PLAIN) for ; Sun, 25 Oct 2020 11:39:49 -0700 Subject: Re: What is the "better / best " method to multi-boot different OSes natively WITHOUT VirtualBox(es) ? To: freebsd-questions@freebsd.org References: <20201024111010.5c867e8540a369b826d26703@sohara.org> <20201025065025.6a13dc89@archlinux> <24469.26288.47199.882303@jerusalem.litteratus.org> <20201025135437.35b592a5@archlinux> From: David Christensen Message-ID: Date: Sun, 25 Oct 2020 11:39:48 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <20201025135437.35b592a5@archlinux> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4CK6G86vWCz4PB5 X-Spamd-Bar: +++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of dpchrist@holgerdanske.com has no SPF policy when checking 184.105.128.27) smtp.mailfrom=dpchrist@holgerdanske.com X-Spamd-Result: default: False [3.68 / 15.00]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.46)[0.456]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_DN_NONE(0.00)[]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_MEDIUM(0.73)[0.729]; ARC_NA(0.00)[]; NEURAL_SPAM_LONG(0.60)[0.598]; DMARC_NA(0.00)[holgerdanske.com]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:6939, ipnet:184.104.0.0/15, country:US]; SUBJECT_ENDS_QUESTION(1.00)[]; MAILMAN_DEST(0.00)[freebsd-questions]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Oct 2020 18:40:01 -0000 On 2020-10-25 05:54, Ralf Mardorf wrote: > On Sun, 25 Oct 2020 07:51:12 -0400, Robert Huff wrote: >> Ralf Mardorf writes: >> >> Steve O'Hara-Smith wrote: >> >>> >bot swap drive bay >>> >>> A hot swap drive bay inherits the risk of a damage by static >>> electricity when changing drives. Computer disk drives, solid-state drives, flash drives, etc., are all ESD sensitive. ESD precautions should be taken whenever they are handled, regardless of mounting. >> 1) A quality product should minimize that risk. https://en.wikipedia.org/wiki/Electromagnetic_compatibility > This is less related to the used hot swap drive bay or disk, it's > depends more on the clothes or flooring. +1 Also shoes, seat cushions, work surfaces, other equipment, other workers, etc.. > IMO we shouldn't wear > an antistatic wrist strap, unless the used gear is connected by galvanic > isolation. Please explain how galvanic isolation relates to electrostatic discharge mitigation. https://en.wikipedia.org/wiki/Antistatic_device#Antistatic_wrist_strap https://en.wikipedia.org/wiki/Galvanic_isolation > I don't have my computer gear connected by isolating > transformers Please provide a URL for an isolating transformer that can mitigate electrostatic discharge, https://en.wikipedia.org/wiki/Isolation_transformer > and I don't trust fault current circuit breakers, I agree that circuit breakers, ground-fault circuit interrupters, and arc-fault circuit interrupters will not mitigate electrostatic discharge: https://en.wikipedia.org/wiki/Circuit_breaker https://en.wikipedia.org/wiki/Residual-current_device https://en.wikipedia.org/wiki/Arc-fault_circuit_interrupter Do you have some other kind of circuit breaker in mind? > so IMO > wearing an antistatic wrist strap is not without a risk, Please explain the risk(s) associate with antistatic wrist straps. David