OpenEuphoria

Re: cluster size

• Posted by Kat <gertie at PELL.NET> Jan 27, 2002
• 451 views

On 27 Jan 2002, at 21:00, Elliott Sales de Andrade wrote:

> 
> It doesn't matter what patition the drive is on. 

But you said:

> > > 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), 

Which as you now say, has nothing to do with the question or the 
explaination. Especially since the original question was about 2 different 
drives, not two partitions.

Kat

> It depends on what the 
> cluster size is set to when it is formatted. The drive is seperated into 
> blocks of 512 bytes. When it is changed to FAT32, you can set it to 8, 16, 32,
> 64 or 128 blocks per cluster. When you create a file, it takes up at least one
> of these clusters. The filename does take up space in the FAT tables, but that
> is pre-allocated. In Win95-OSR2 and Win98 there is a program that you can use
> to
> change from FAT16 to FAT32 and you can choose the cluster size. Unfortunately,
> you ca't change it later on unless you reformat the drive or use
> non-destructive
> methods.
> 
> 
> >From: Kat <gertie at PELL.NET>
> >Reply-To: EUforum at topica.com
> >To: EUforum <EUforum at topica.com>
> >Subject: Re: cluster size
> >Date: Sun, 27 Jan 2002 14:06:43 -0600
> >
> >
> >On 27 Jan 2002, at 8:09, vern at lvp.eastlink.ca wrote:
> >
> > >
> > > ----- Original Message -----
> > > From: "Kat" <gertie at PELL.NET>
> > > To: "EUforum" <EUforum at topica.com>
> > > Sent: Sunday, January 27, 2002 2:04 AM
> > > 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
> >
> >But that is not what he said, he said 2nd drive. I have more than one drive
> >in
> >all my computers.
> >
> >Kat
> >
> >
> > > 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  :)
> > >
> > > >
> 
> 
>