Date: Thu, 10 Oct 2024 17:13:47 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: questions@freebsd.org Subject: Re: How to zero a failing disk drive before disposal? Message-ID: <9ef03152-dce3-463e-b18f-842d6eae318b@FreeBSD.org> In-Reply-To: <4592b3d058a5c2c2c5acf752706ade1e4e1ed7ca.camel@riseup.net> References: <5117.1728561469@segfault.tristatelogic.com> <ZwfG1Q0Qtb6IkHCd@pureos> <CAAdA2WNgKoxpb-=p1gMDyZ5XMZEMfz3_1uqPGNz1FhKs_csYnQ@mail.gmail.com> <4592b3d058a5c2c2c5acf752706ade1e4e1ed7ca.camel@riseup.net>
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On 10/10/2024 16:17, Ralf Mardorf wrote: > Someone might have the skills to extract data even after the plates have > been shredded and fused into a lump. The Néel temperature for steel is typically somewhere around 200 -- 500 ºC depending on the alloy. 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. Cheers, Matthew
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