Date   : Tue, 23 Mar 2010 00:40:13 +0000
From   : pete@... (Pete Turnbull)
Subject: Re-using floppies

On 23/03/2010 00:01, J.G.Harston wrote:

> Don't get 5.25" DD/HD mixed up with 3.5" DD/HD. The magnetic
> coercitivity of 5.25" disks between DD and HD is something like
> double, whereas with 3.5" it's about 20%

25% to 30% actually.  And that's certainly enough to make the abused 
disks unreliable.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York