From nobody Tue May 23 03:44:53 2023 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 4QQKvg20NDz4CrjH for ; Tue, 23 May 2023 03:45:03 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (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 (2048 bits) client-digest SHA256) (Client CN "troutmask", Issuer "troutmask" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4QQKvf0D25z3lpr for ; Tue, 23 May 2023 03:45:01 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Authentication-Results: mx1.freebsd.org; dkim=none; spf=none (mx1.freebsd.org: domain of sgk@troutmask.apl.washington.edu has no SPF policy when checking 128.95.76.21) smtp.mailfrom=sgk@troutmask.apl.washington.edu; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=washington.edu (policy=none) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) by troutmask.apl.washington.edu (8.17.1/8.17.1) with ESMTPS id 34N3irHt033089 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for ; Mon, 22 May 2023 20:44:53 -0700 (PDT) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.17.1/8.17.1/Submit) id 34N3ir0B033088 for freebsd-hackers@freebsd.org; Mon, 22 May 2023 20:44:53 -0700 (PDT) (envelope-from sgk) Date: Mon, 22 May 2023 20:44:53 -0700 From: Steve Kargl To: freebsd-hackers@freebsd.org Subject: gpart destroy efi partition? Message-ID: Reply-To: sgk@troutmask.apl.washington.edu 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-Disposition: inline X-Spamd-Result: default: False [1.82 / 15.00]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_SHORT(-1.00)[-0.998]; NEURAL_SPAM_LONG(0.99)[0.990]; NEURAL_SPAM_MEDIUM(0.83)[0.830]; MIME_GOOD(-0.10)[text/plain]; DMARC_POLICY_SOFTFAIL(0.10)[washington.edu : No valid SPF, No valid DKIM,none]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; R_SPF_NA(0.00)[no SPF record]; ASN(0.00)[asn:73, ipnet:128.95.0.0/16, country:US]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; REPLYTO_ADDR_EQ_FROM(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; HAS_REPLYTO(0.00)[sgk@troutmask.apl.washington.edu] X-Rspamd-Queue-Id: 4QQKvf0D25z3lpr X-Spamd-Bar: + X-ThisMailContainsUnwantedMimeParts: N Is there a secret incantation for destroying an EFI partition on a USB memstick? After installing FreeBSD, I would like to re-use a memstick, but % gpart destroy da0 gpart: geom 'da0': Read-only file system % gpart destroy -F da0 gpart: geom 'da0': Read-only file system % gpart show da0 => 40 60063664 da0 GPT (29G) 40 60063664 1 ms-basic-data (29G) % gpart delete -i 1 da0 gpart: geom 'da0': Read-only file system % dd if=/dev/zero of=/dev/da0 bs=1m dd: /dev/da0: Read-only file system -- Steve