OpenEuphoria

Re: cluster size

• Posted by Dan Moyer <DANIELMOYER at prodigy.net> Jan 28, 2002
• 441 views

Thanks Kat,

But now I'm running into a problem:  when I modify Craig Gilbert's
disk_free_space() to return cluster_size (took me an embarrassingly long
time to figure out it was just bytes_per_sector * sectors_per_cluster!), I
get a return of 32K, for both a 3gig drive and a logical drive of 10gig,
which actually seem to have 4 & 8k cluster sizes respectively.  Since FAT16
will format for 32K per cluster for anything above 1 or 2 gig (I think?),
I'm wondering if maybe Craig's function is not correct for FAT32?  His demo
does discern that my drives are FAT32, but the free space sizes computed are
maxed at 2gig, not what they really are, which seems to further suggest not
compatible with FAT32.

Any thoughts?

Dan Moyer


----- Original Message -----
From: "Kat" <gertie at PELL.NET>
To: "EUforum" <EUforum at topica.com>
Sent: Sunday, January 27, 2002 10:05 PM
Subject: Re: cluster size


>
> On 27 Jan 2002, at 20:52, Dan Moyer wrote:
>
> >
> > Sorry, I didn't explain in enough detail.   Although I was speaking in
> > particular about two different drives, the second one *is* partitioned,
> > which from Vern & Elliott's explanations now seems to be the cause of
the
> > different minimum cluster sizes.
>
> Ok, sorry, i didn't understand.
>
> > But independent of the cause, & unrelated to how to *change* the minimum
> > cluster size, what I need to be able to do is *programmatically* find
out
> > *what* the minimum cluster size on any specified drive in any users
system
> > is.
> >
> > Reason is, I'm trying to finish up a "what all's taking up so much space
on my
> > drive!" utility I had started once before & couldn't get to work quite
right,
> > which now does work except for knowing the actual minimum cluster size
for any
> > drive.
>
> Ok, look to the end of function disk_free_space() in Craig Gilbert's
diskutil.e
> in http://www.rapideuphoria.com/diskutil.zip It's dos. Also, look in
function
> GetDiskFreeSpace() in win32lib v0.15c.
>
> Kat
>
>
>
>