[Coco] Another Coco Virtual Disk Util

[Bob Devries]

Wayne,
I think you're confusing Segment Allocation Size with Cluster Size. They are 
totally different.

Cluster size is determined at format time (on the Format command line in 
NitrOS9), and is the number of sectors which are "clustered" together as a 
single addressable unit. On hard disks, this can be set to any number (must 
be power of 2).

Segment allocation size is the number of sectors (or clusters) allocated at 
one time when creating or extending a FILE on the disk. Remember, a 
directory is just another file to OS-9.

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Wayne Campbell" <asa.rand at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Wednesday, October 23, 2013 12:13 PM
Subject: Re: [Coco] Another Coco Virtual Disk Util


Luis,

The OS9 format command defaults to 32 sector minimum allocation. You can
change it by using the appropriate flag in the command line (not sure of
its option name offhand). I learned years ago that the max size set for
hd's is because it is the max size you can use 1-sector allocations with. I
keep forgetting to specify that when I format a vhd with that command.

Wayne
 On Oct 22, 2013 10:02 PM, "Luis Fernández" <luis46coco at hotmail.com> wrote:

> Wayne. I think that  OS9 has PD.SAS  Segment allocation size
> Minimum size of segment allocation (number of sectors to be allocated at
> one time)
> I think it is for new directories (usually minimum 8 sectors)
> not whether to also file
>
>
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