how strong of a magnet?

Article View: comp.sys.mac

Article #22343

#22343

From: flowers
Date: Tue, 01 Dec 1987 05:30

10 lines
1020 bytes

Recently people suggested unformatting a floppy by using a magnet.  I
needed to do so, so used a donut magnet about 1 inch in diameter
(don't know the strength), and the floppys were readible just fine
afterwards.  While I'm gratified to know that they aren't THAT
vulnerable, I'm wondering just how strong of a magnet is needed for
this task.  (This time I ended up formatting them on a PC to get the
needed effect).

thanks,
Margot Flowers   Flowers@CS.UCLA.EDU   ...!{ucbvax|ihnp4}!ucla-cs!flowers

Technical Details

Message-ID: <9554@shemp.UCLA.EDU>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!ukma!nrl-cmf!ames!elroy!cit-vax!ucla-cs!flowers

Show Full Headers

Complete Article Headers

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!ukma!nrl-cmf!ames!elroy!cit-vax!ucla-cs!flowers
From: flowers@CS.UCLA.EDU
Newsgroups: comp.sys.mac
Subject: how strong of a magnet?
Message-ID: <9554@shemp.UCLA.EDU>
Date: Tue, 1-Dec-87 00:30:04 EST
Article-I.D.: shemp.9554
Posted: Tue Dec  1 00:30:04 1987
Date-Received: Fri, 4-Dec-87 00:41:17 EST
Sender: root@CS.UCLA.EDU
Reply-To: flowers@CS.UCLA.EDU ()
Organization: UCLA Computer Science Department
Lines: 10