[Coco] Another MESS Question

[Bob Devries]

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

>>>>

>>>>

>>>> -- 

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>>>>

>>>

>>>

>>> -- 

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>>

>>

>

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