[Coco] Crunch?

[Bob Devries]

Maybe someone (we as a group?) can come up with a sure-fire way to 
differentiate between an RSDOS disk and an OS-9 disk?

Lets start by listing the obvious similarities and differences.

I'll head off by suggesting that Track 17 sector 1 of an RSDOS disk is all 
$FF, since it should not be used. (of course, someone could shoot me down in 
flames here.... )

Also, the directory entries on sectors 3 and following of track 17 do fit a 
certain pattern, especially those bytes which denote the file type, and 
ascii flag.

Anyone else care to add to this?

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Willard Goosey" <goosey at virgo.sdc.org>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Thursday, June 04, 2009 9:48 AM
Subject: Re: [Coco] Crunch?


> On Wed, Jun 03, 2009 at 04:35:28PM -0600, Darren A wrote:
>>I think it is seeing the data in track 0
>> sector 1 and deciding that it must be an OS-9 disk (even though it
>> isn't). It then uses that information to setup an incorrect disk
>> geometry.
>
> Can't handle virtual disks with data in the first sector of the disk?
>
> That's bad.  I mean, I've seen lots of broken software, but DAMN!
>
> Willard
> -- 
> Willard Goosey  goosey at sdc.org
> Socorro, New Mexico, USA
> I search my heart and find Cimmeria, land of Darkness and the Night.
>  -- R.E. Howard
>
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