From owner-freebsd-questions@FreeBSD.ORG Wed Aug 26 20:23:51 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 095DD106568B for ; Wed, 26 Aug 2009 20:23:51 +0000 (UTC) (envelope-from rsmith@xs4all.nl) Received: from smtp-vbr1.xs4all.nl (smtp-vbr1.xs4all.nl [194.109.24.21]) by mx1.freebsd.org (Postfix) with ESMTP id 76BAA8FC29 for ; Wed, 26 Aug 2009 20:23:50 +0000 (UTC) Received: from slackbox.xs4all.nl (slackbox.xs4all.nl [213.84.242.160]) by smtp-vbr1.xs4all.nl (8.13.8/8.13.8) with ESMTP id n7QKNm84052047; Wed, 26 Aug 2009 22:23:48 +0200 (CEST) (envelope-from rsmith@xs4all.nl) Received: by slackbox.xs4all.nl (Postfix, from userid 1001) id EA512BA9D; Wed, 26 Aug 2009 22:23:47 +0200 (CEST) Date: Wed, 26 Aug 2009 22:23:47 +0200 From: Roland Smith To: George Davidovich Message-ID: <20090826202347.GA27093@slackbox.xs4all.nl> References: <1338880b0908241129p75b6845cg26d21804e118364@mail.gmail.com> <20090824223247.GD43410@slackbox.xs4all.nl> <1338880b0908252246s21191e83k7c251366b706532@mail.gmail.com> <20090826180741.GA23120@slackbox.xs4all.nl> <20090826191348.GA85581@marvin.optimis.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="FL5UXtIhxfXey3p5" Content-Disposition: inline In-Reply-To: <20090826191348.GA85581@marvin.optimis.net> X-GPG-Fingerprint: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 X-GPG-Key: http://www.xs4all.nl/~rsmith/pubkey.txt X-GPG-Notice: If this message is not signed, don't assume I sent it! User-Agent: Mutt/1.5.20 (2009-06-14) X-Virus-Scanned: by XS4ALL Virus Scanner Cc: freebsd-questions@freebsd.org Subject: Re: hard disk failure - now what? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Aug 2009 20:23:51 -0000 --FL5UXtIhxfXey3p5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 26, 2009 at 12:13:48PM -0700, George Davidovich wrote: > > If the drive is that bad, it is doubtfull if dd or ddrescue will be > > able to get a good copy. >=20 > Probably true. I hesitate to suggest this, but sticking the drive in a > freezer (preferrably in a ziplock bag) for a few hours or overnight > might help. Stories from people claiming "I swear it works!" go back > years. =20 Interesting. > To the exent it does work, it might give Kelly enough time to attempt > recovery. If more time is required, he can try and find a creative > workaround for the 5 meter max length for USB cables. Also, > experimenting with dry ice or acetone baths might prove to be > interesting, or at least educational. ;-) Acetone and electronics are _not_ a good mix! Acetone is extremely flammable. It evaporates easily and can form explosive mixtures in air over= a wide range of concentrations. Not to mention that it would degrade/destroy printed circuit boards; acetone breaks down the resin that binds the glass fibers in the laminates! Not as fast as n-Methyl-2-pyrrolidone, bus fast enough. I remember this special non-condictive 3M fluid that can be used to cool electronics. A group of hackers dunked a complete PC minus the case and pow= er supply in this stuff. The fluid itself was cooled with liquid nitrogen. They everclocked it something wicked. Not very practical though. :-) Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --FL5UXtIhxfXey3p5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iEYEARECAAYFAkqVmdMACgkQEnfvsMMhpyWt+ACcDYO7P9uPS9M9l8NoEsnstQs2 zXoAn2EGki2UmB5q+Ca9yBvo9UsbtRFG =Piws -----END PGP SIGNATURE----- --FL5UXtIhxfXey3p5--