[Coco] Another Coco Virtual Disk Util

[Walt Zydhek]

Viola!!  Drive freespace matches now. :) thanks guys for helping resolve
this issue. 

-Walt Zydhek

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Walt Zydhek
Sent: Tuesday, October 22, 2013 7:46 PM
To: 'CoCoList for Color Computer Enthusiasts'
Subject: Re: [Coco] Another Coco Virtual Disk Util

Fix applied and uploaded to sourceforge.

-Walt Zydhek

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Bob Devries
Sent: Tuesday, October 22, 2013 7:05 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Another Coco Virtual Disk Util

It is my understanding that FLOPPY drives have a PD.SAS of 8, and HARD
drives use 32 ($20). That is done to prevent excessive fragmentation. I know
I have always used 32 on my hard drives. And isn't a VHD file just another
form of hard drive?

Gene Heskett can give us chapter and verse on this. He's the resident
expert.

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message -----
From: "Walt Zydhek" <walt at wzydhek.com>
To: "'CoCoList for Color Computer Enthusiasts'" <coco at maltedmedia.com>
Sent: Wednesday, October 23, 2013 11:54 AM
Subject: Re: [Coco] Another Coco Virtual Disk Util


> Yup, it's because each of the directories on your original have a 
> minimum of
> 20 sectors allocated to them instead of the default 8. The PD.SAS 
> value is probably $20 instead of $08 in the virtual machine that 
> formatted that original vhd. Do a dmode of that drive to see what the 
> SAS value is set to.
>
> -Walt Zydhek
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com 
> [mailto:coco-bounces at maltedmedia.com]
> On
> Behalf Of Wayne Campbell
> Sent: Tuesday, October 22, 2013 6:47 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Another Coco Virtual Disk Util
>
> Yes it was. The one I made today was using that one as source and 
> copying to a new one made with the new version today. The resulting 
> free space is the same whether I use the original (Archives) or the 
> second  (Archive), so that tells me the original is using more space 
> than the new, but over
> 100,000 bytes? That's alot of wasted space.
>
> Format defaults to 32 sector allocation. I forgot to change it to 1 
> sector allocations, but EmuDisk doesn't give me an option to change it.
>
> Wayne
> On Oct 22, 2013 9:15 PM, "Walt Zydhek" <walt at wzydhek.com> wrote:
>
>> Question.. the 2 files you just sent me. The NEW version (RiBBS 
>> Archive.vhd, not plural), was it created and copied to BEFORE I fixed 
>> the sector allocation in directory creation? Because it looks like it.
>> I see directories with their initial segment having a single sector.
>> And comparing it to the source version, I can see where the freespace 
>> went in the source. It is using a default segment allocation of $20 
>> (when directories are created, it allocates 32 sectors automatically 
>> instead of the norm of 8). Please check your SAS value for your drive 
>> in DMODE and see if it says $08 or $20. Regardless, if the 
>> Destination version was created and copied to AFTER my fix to 
>> directory sector allocation, then there is another bug there 
>> somewhere, as it should be creating initial segments for directories 
>> at the default PD.SAS value of 8 sectors.
>>
>> -Walt Zydhek
>>
>> -----Original Message-----
>> From: coco-bounces at maltedmedia.com
>> [mailto:coco-bounces at maltedmedia.com]
>> On
>> Behalf Of Wayne Campbell
>> Sent: Tuesday, October 22, 2013 5:30 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] Another Coco Virtual Disk Util
>>
>> I used RiBBS Archive (the new copy) as source.
>> I created a vhd image 5760 tracks, 64 sectors/track. Free Space after
>> format:
>>
>> 94323456
>>
>> I drag'd the root directory from the source vhd to the destination vhd.
>> Source vhd free space: 89308928 (this was the new copy yesterday) 
>> Destination vhd free space: 89299200 (after copying) The original 
>> source vhd free space: 89196000
>>
>> All disks had the same amount of free space when formatted and before 
>> copying any files. There may be a few deleted files in the original, 
>> but I don't think it's over 100k worth when the average filesize for 
>> files I create are <4K overall.
>>
>> Wayne
>>
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