OpenEuphoria

Re: cluster size

• Posted by vern at lvp.eastlink.ca Jan 27, 2002
• 462 views

----- Original Message -----
From: "Kat" <gertie at PELL.NET>
To: "EUforum" <EUforum at topica.com>
Subject: Re: cluster size


>
> On 26 Jan 2002, at 21:15, Dan Moyer wrote:
>
> >
> > Does anyone know how I can programmatically find out what is the minimum
> > cluster size used on a drive?  I'm under the impression that it can
vary,
> > since a small file (little bigger than a Kb) on one drive takes up 4096
> > bytes, and the same file on another drive takes up 8192 bytes.  Both
drives
> > indicate FAT32 from fdisk.
>
> I think Euman did a include to get all the drive stats.
>
> > And am I right in thinking that it is cluster size rather than simply
file
> > size that relates to how much of a drive is used up?  In other words, if
you
> > have a whole bunch of small files, each actually takes up (at least) one
> > cluster, so more of your drive may be used up than would seem so from
just
> > adding up file sizes?
>
>  Correct. The dos 8.3 filename takes up one slot, 9.3 takes up one more
> slot, and each 7chars over that will count as another filename slot too
under
> fat32.
>
> Kat
>
>
One reason, I believe, is that the 1st FAT32 drive is the native drive and
the second drive is a FAT32b partition (extended DOS and Logical Drive), the
extra size being additional logical making, an unfortunate side effect of
DOS' single sized cluster size, fortunately the solution is to install a
Unix os and format cluster at 1024  :)

>
>
>