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[209.85.128.170]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e290ee00013sm403976276.19.2024.10.10.10.46.27 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 10 Oct 2024 10:46:27 -0700 (PDT) Received: by mail-yw1-f170.google.com with SMTP id 00721157ae682-6dde476d3dfso11543917b3.3 for ; Thu, 10 Oct 2024 10:46:27 -0700 (PDT) X-Received: by 2002:a05:690c:f93:b0:64b:5cc7:bcbc with SMTP id 00721157ae682-6e343dad61emr1568107b3.32.1728582387207; Thu, 10 Oct 2024 10:46:27 -0700 (PDT) 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 References: <5117.1728561469@segfault.tristatelogic.com> <4592b3d058a5c2c2c5acf752706ade1e4e1ed7ca.camel@riseup.net> <9ef03152-dce3-463e-b18f-842d6eae318b@FreeBSD.org> <4d4886050a110040091998cc8b96323f1fa215db.camel@riseup.net> In-Reply-To: <4d4886050a110040091998cc8b96323f1fa215db.camel@riseup.net> From: Tomek CEDRO Date: Thu, 10 Oct 2024 19:46:15 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: How to zero a failing disk drive before disposal? To: Ralf Mardorf Cc: questions@freebsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4XPcd24KrPz40M4 X-Spamd-Bar: ---- On Thu, Oct 10, 2024 at 6:40=E2=80=AFPM Ralf Mardorf wrote: > On Thu, 2024-10-10 at 17:13 +0100, Matthew Seaman wrote: > > Steel that is hot enough to "fuse into a lump" will need to be > > significantly hotter than that -- nearly at the melting point. All of > > the magnetic information will have been wiped. > > Other ferromagnets useable for magnetic recording are going to behave > > similarly. > > you only need a morphogenetic field resonator to read data from a > demagnetised lump, see > https://static.spektrum.de/fm/912/f2000x857/245808923_pa.jpg ;). I have something like this somewhere in my basement.. we only need to make it pocket size now and battery powered plus the USB interface so it works on FreeBSD :D :D :D --=20 CeDeROM, SQ7MHZ, http://www.tomek.cedro.info