[Coco] Another Coco Virtual Disk Util

[Wayne Campbell]

I may be mis-remembering something. I do recall that if I change the
cluster size it will affect how many sectors are used when allocating space
for a file, or to increase the allocation for a file. The minimum is
1-sector clusters, and over a certain size of drive space (I seem to recall
it being $5A000) you cannot use 1-sector clusters.

If someone knows what I am talking about, please feel free to correct me or
back me up, whichever is required.

Wayne
 On Oct 22, 2013 10:54 PM, "Bob Devries" <devries.bob at gmail.com> wrote:

> 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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