OpenEuphoria

Re: FAT32 HELP!

• Posted by bytebrain <bytebrain at MINDSPRING.COM> Aug 18, 1999
• 416 views

-------Phoenix-Boundary-07081998-
Content-type: text/plain; charset=ISO-8859-1
Content-transfer-encoding: Quoted-printable

The latest:
>Hi Wes,
>Is parsing the output of the dir command going too far=3F
>
>Cheers,
>-- Nick

Then Wes:
>That was my next step, until I found that you can't redirect the
>standard
>error in dos, so any drive with no files will happily present a FILE
>NOT
>FOUND even though I'm redirecting output :)
>
>Bill didn't make it easy...
>

Hmm.  Looks like I need to update the diskutil file.  I've been doing
some sniffing around, and thus far come up with diddly/squat as far
as a *nice* routine is concerned.

However, the redirected dir parsing should work fine if you first
write a dummy file to ensure that you get no FILE NOT FOUND error.

I guess it would simplify parsing as well since you know, in that
case, what file name to run a dir for, so you'll only get one
return, with no dir dot and dir dot dot stuff in the way either.
A zero byte dummy file, deleted immediately afterward, should do
the trick.

If for some reason you can't write a dummy file (no write
permissions, whatever), then I dunno.  I'll keep looking.

I'm still puzzled about why the carry flag test bombed.  If the
version of DOS you're running supports FAT32 (as I assume it
does) then the durn thing should work.  Even if it did not
support FAT32, it should have returned CF clear/AL 00h, according
to Ralf Browns famous List.

Possibly relevant note: According to the aforementioned List
with regard to INT21/AX=3D7303h:
    "This function reportedly returns a maximum of 2GB
     free space even on an FAT32 partition larger than
     2GB under some versions of Win95, apparently by
     limiting the number of reported free clusters to
     no more than 64K."

So even if you get #7303 to work, you may still need the
dir parsing trick to get reliable info.

Back to looking,
Craig
------------------------------------------
Logic, like whiskey, loses its beneficial
effect when taken in too large quantities.
--Lord Dunsany

-------Phoenix-Boundary-07081998---