[Coco] Another MESS Question

Sun Dec 25 16:33:24 EST 2005

Robert,
I in fact did try to access the VHD using ded /h0@ to try to write past the 
end of what is used now, but I received the error 242. ded steadfastly 
refuses to go further than that sector.

I will create a new blank vhd file, and see if that works. Maybe something 
is wrong with the file I have, I dunno.
--
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.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Robert Gault" <robert.gault at worldnet.att.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, December 25, 2005 11:52 PM
Subject: Re: [Coco] Another MESS Question

> The image files will only grow if you write "passed the end" if the image. 
> That means you need a version of format or DSKINI which actually writes to 
> the image under the conditions of MESS.
>
> Keeping OS-9 in mind as the prime OS, it is imperative that the .vhd image 
> be formatted before anything is written to the disk. The catch21 is that 
> no physical formatting takes place, so nothing gets written past the end 
> of the root directory. So, now what?!
>
> There are three approaches for extending the .vhd to its full size before 
> OS-9 use. 1) Use RGBDOS for the emulator and dskini any virtual Disk Basic 
> drive. 2) Boot OS-9 from a floppy that has .vhd access, open /h0@, and 
> write a byte at the end of LSN$59FFF. 3) Use a PC utility to populate the 
> full $5A000 sectors with some character, ex. $E5.
>
> Now the .vhd will be the correct size but filled with junk. If you like 
> pristine disks and don't want to look at leftover PC files, you will need 
> to write a short OS-9 program, probably in Basic09, to "wash" every sector 
> passed the root directory.
>
> Bob Devries wrote:
>> more on that Virtual HD question... the VHD file is exactly 17291 sectors 
>> long on the PC hard drive. Even though the /H0 descriptor says it is 90 
>> MB, it isn't. Is it supposed to grow dynamically? If it is, it isn't 
>> doing it.
>>
>> Here's the ident of EMUDSK and H0:
>>
>> Header for:  EmuDsk
>> Module size: $00BC    #188
>> Module CRC:  $85815B (Good)
>> Hdr parity:  $66
>> Exec. off:   $0021    #33
>> Data Size:   $00FF    #255
>> Edition:     $01      #1
>> Ty/La At/Rv: $E1 $81
>> Dev Dvr mod, 6809 obj, re-en, R/O
>>
>> Header for:  H0
>> Module size: $002F    #47
>> Module CRC:  $BE79DA (Good)
>> Hdr parity:  $CB
>> Edition:     $52      #82
>> Ty/La At/Rv: $F1 $81
>> Dev Dsc mod, 6809 obj, re-en, R/O
>>
>> -- 
>> 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.
>>
>> website: http://www.home.gil.com.au/~bdevasl
>> my blog: http://bdevries.invigorated.org/
>>
>> ----- Original Message ----- From: "Bob Devries" <bdevries at gil.com.au>
>> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>> Sent: Sunday, December 25, 2005 8:01 PM
>> Subject: Re: [Coco] Another MESS Question
>>
>>
>>> It seems that I'm not able to read past sector $438B (17291) using ded. 
>>> If I try to, I get error 242, which is write protect.
>>>
>>> Any comments?
>>> -- 
>>> 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.
>>>
>>> website: http://www.home.gil.com.au/~bdevasl
>>> my blog: http://bdevries.invigorated.org/
>>>
>>> ----- Original Message ----- From: "Bob Devries" <bdevries at gil.com.au>
>>> To: <coco at maltedmedia.com>
>>> Sent: Saturday, December 24, 2005 4:49 PM
>>> Subject: [Coco] Another MESS Question
>>>
>>>
>>>> Is it possible to write protect the disks in MESS? If so, how is it 
>>>> done?
>>>>
>>>> If not.... why am I getting error 242 when I try to copy files to the 
>>>> virtual HD?
>>>> -- 
>>>> 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.
>>>>
>>>> website: http://www.home.gil.com.au/~bdevasl
>>>> my blog: http://bdevries.invigorated.org/
>>>>
>>>>
>>>> -- 
>>>> Coco mailing list
>>>> Coco at maltedmedia.com
>>>> http://five.pairlist.net/mailman/listinfo/coco
>>>>
>>>>
>>>> -- 
>>>> No virus found in this incoming message.
>>>> Checked by AVG Free Edition.
>>>> Version: 7.1.371 / Virus Database: 267.14.7/214 - Release Date: 
>>>> 23/12/2005
>>>>
>>>>
>>>
>>>
>>> -- 
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> http://five.pairlist.net/mailman/listinfo/coco
>>>
>>>
>>> -- 
>>> No virus found in this incoming message.
>>> Checked by AVG Free Edition.
>>> Version: 7.1.371 / Virus Database: 267.14.7/214 - Release Date: 
>>> 23/12/2005
>>>
>>>
>>
>>
>
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.371 / Virus Database: 267.14.7/214 - Release Date: 23/12/2005
>
> 