Date   : Thu, 24 Apr 2003 16:21:20 +0100 (BST)
From   : Andrew Benham <adsb@...>
Subject: Re: High Density Disks

On Thu, 24 Apr 2003, Tim Fardell wrote:

> In my experience, HD 3.5" disks will work flawlessly in any 3.5" drive.
> Never have any trouble with this combination. 5.25" disks, however, seem
> to be a completely different kettle of fish - DD drives simply won't
> recognise or do anything with a HD 5.25" disk. It won't even attempt to
> format it. Even if you format it on a HD drive, it can then only be read
> in an HD drive (even if a DD format is used).

As I recall, HD 5.25" disks use a different magnetic media from
the DD 5.25" disks.  However all 3.5" disks seem to use similar
media.

I've never tried using a HD 5.25" drive on a BBC. This ought to
allow one to use HD media (although at only 10 sectors per track),
but then one wouldn't be able to share disks.

-- 
Andrew Benham     adsb@...           
Southgate, London N14, United Kingdom

The gates in my computer are AND OR and NOT, not "Bill"