Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: 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 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