From nobody Wed Apr 17 08:14:27 2024 X-Original-To: questions@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 4VKDGS4qQgz5J7Ct for ; Wed, 17 Apr 2024 08:14:40 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Received: from holgerdanske.com (holgerdanske.com [IPv6:2001:470:0:19b::b869:801b]) (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 (4096 bits) client-digest SHA256) (Client CN "holgerdanske.com", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4VKDGQ01Dbz4FGs for ; Wed, 17 Apr 2024 08:14:37 +0000 (UTC) (envelope-from dpchrist@holgerdanske.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=holgerdanske.com header.s=nov-20210719-112354 header.b=f+unXD4n; dmarc=pass (policy=none) header.from=holgerdanske.com; spf=pass (mx1.freebsd.org: domain of dpchrist@holgerdanske.com designates 2001:470:0:19b::b869:801b as permitted sender) smtp.mailfrom=dpchrist@holgerdanske.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=holgerdanske.com; s=nov-20210719-112354; t=1713341668; bh=+O1AlFw1KpJeMXPAWISfGJgbYNQh18YO1V81MqjMj34=; h=Received:Message-ID:Date:MIME-Version:User-Agent:Subject:To: References:Content-Language:From:In-Reply-To:Content-Type: Content-Transfer-Encoding; b=f+unXD4nO22wWV8LBJ9R6h2jq9a3IWf0P+9GwsGTut09d8EYZ1KPrRsrExaPIEBT9 /OIU1Md1lEfs8ec9mWswO0KpyPVxOlkgLCA0TGyp3jFy/tREJ8SDkeOqUZZXlBPEdy hp40WdJKQ29IYvOmNVFV7F5wWPxHVOU4P4Jk/x8IWxSo1Y7a/zKj2QL1YywJqTM4xZ HarVUUz5fQMHEpK2qeIhmnTDu2JAFh8XmnplmDL28zTSK35Bfw1UvWpKGIEKTkWTod ZI9DUp1N8R7x7vSC60OUlz0jj+krWmEp7pHip0sj1qz7ti7//JNni5jdvgfwOWEQ6o 6c80LSIKsGeKDaV4URIc//tXtW1amM2g6AswR1YMPbLwIB0PL0KrRDFIcs2EYnsh4X X0eAa/jvAZz6hbKRKcTkfzPiTS73yU6STv4zqjhQ4P+bpFkBTFtss4bHDobLTfdJmz NKa8u8ETEm0jBWTbXACE2iuYdC1ejs641xDW945gV790LIwJ89yx/7vHtgoxnzDxqA Qadjg/AkiNkIuFlyChQ07IAinnYtSAHm6geHcioc0Nbm3ADJAo3iR7yBPhKKJE2oDr uilGfnFVdfoptXIS+DvMdQD85ue0ouJKVcUPWfmBkDD0Muuql95oKPco6nMC+snj1i /snhWoVUjMitA4Sxv6rDHriE= 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 ; Wed, 17 Apr 2024 01:14:28 -0700 Message-ID: <47a801d7-fe71-483f-a5d3-d1c9e758b8d4@holgerdanske.com> Date: Wed, 17 Apr 2024 01:14:27 -0700 List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-questions@freebsd.org Sender: owner-freebsd-questions@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: how to remove freebsd when it is running To: questions@freebsd.org References: Content-Language: en-US From: David Christensen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.89 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.999]; DMARC_POLICY_ALLOW(-0.50)[holgerdanske.com,none]; R_SPF_ALLOW(-0.20)[+a]; R_DKIM_ALLOW(-0.20)[holgerdanske.com:s=nov-20210719-112354]; ONCE_RECEIVED(0.10)[]; MIME_GOOD(-0.10)[text/plain]; XM_UA_NO_VERSION(0.01)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_VIA_SMTP_AUTH(0.00)[]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_ONE(0.00)[1]; RCVD_TLS_ALL(0.00)[]; MLMMJ_DEST(0.00)[questions@freebsd.org]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[questions@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[holgerdanske.com:+] X-Rspamd-Queue-Id: 4VKDGQ01Dbz4FGs On 4/17/24 07:21, hlyg wrote: > my freebsd 13 is installed at flash disk of dell thin client > > it doesn't work well, i want to remove it > > "dd if=/dev/zero of=/dev/ada0 count=1000 ..." doesn't work, freebsd > doesn't allow > > according to dell manual, i shall be able to enter bios by pressing F2 > before bsd booting so that i can set boot sequence  to boot from usb > disk, but i can't enter bios, pressing F2 doesn't work > > it's not easy for me to open case and dismount disk See "How to Run a Preboot Diagnostic Test on a Dell Computer". I suggest that you run all of the tests to verify that your hardware is working correctly. No operating system can be expected to work correctly on broken hardware: https://www.dell.com/support/kbdoc/en-us/000181163/how-to-enter-the-built-in-diagnostics-32-bit-diagnostics-supportassist-epsa-epsa-and-psa Then, boot FreeBSD and backup your data. Enter the Setup utility per "How to access the BIOS or UEFI": https://www.dell.com/support/contents/en-us/article/product-support/self-support-knowledgebase/fix-common-issues/bios-uefi Then look for the following page to erase all internal storage devices in the computer: Setup -> Maintenance -> Data Wipe David