Date   : Tue, 07 Apr 2009 12:45:49 +0100
From   : zeem.uk@... (Alex Taylor)
Subject: Writing BBC Disc Images on Linux

2009/4/7 David Jones <drj@...>:
>
> On 7 Apr 2009, at 12:13, Alex Taylor wrote:

>> I've often wondered if there's any technical reason why you can't just
>> write an identical copy of each track twice when writing a 40-track
>> disk with an 80-track drive, rather than double-stepping.

> Because it would be difficult to impossible to guarantee that the two tracks
> lined up to an accuracy better than the length of a bit.

That's what I thought, but I wasn't 100% sure because I have no idea
how accurate floppy drives are!

Would it still be better than having completely different data
surrounding it (i.e. when writing over a previously used disk), or
would it make no difference? I assume then that the only other course
of action would be to use a bulk eraser.

-- 
Alex Taylor