Date   : Mon, 29 Jun 2009 00:44:54 +0100
From   : dm.hunt@... (David Hunt)
Subject: Master 512 boot problem

> > Yes, I have formatted the floppy as an ADFS L disc, I used OmniFlop to
> do
> > that and then put the ADL disc image from BeebEm into that disc. The
> disc
> > is
> > a split format, with a boot file that you can run from the * prompt that
> > gets you as far as I got.
> 
> > Is there a nuance between 3.5" and 5.25" ADFS L formats ?
> 
> Yes.
> 
> There are two ADFS L formats defined - look for:
> 
> 5.25" Acorn ADFS L
> 3.5" Acorn ADFS L
> 
> (easier to see if you select 'only Acorn' formats using the latest
> version).
> 
> The 5.25" format came from Mark Ferns 03/02/05, Jon Ripley, and Tim
> Felgate
> 28/03/05.
> The 3.5" format came from Chris Richardson 09/02/05.
> 
> The difference? The 3.5" format reported had head IDs {0, 1}; all 5.25"
> formats had head IDs {0, 0}. Both are available for a 3.5" 1.44MB drive,
> with the names merely reflecting the reports.
> 
> Jason.

OK, I downloaded the latest (2.2c) OmniFlop and the problem vanished. I made
a 3.5" floppy with an ADFS 5.25" format and then loaded a HCS format disc
image of the DOSPlus boot disc and it works! I should really keep my s/w
more up to date.

Cheers

Dave