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Date:      Sun, 28 May 2006 16:42:15 -0500
From:      "Nikolas Britton" <nikolas.britton@gmail.com>
To:        "Hans Lambermont" <hans@lambermont.dyndns.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: What is the maximum file size on a dvd+r ?
Message-ID:  <ef10de9a0605281442w7300ff19hbcf2df16b3c91b8b@mail.gmail.com>
In-Reply-To: <ef10de9a0605281430w6b35a3f7yff2b02123eb156b7@mail.gmail.com>
References:  <20060528192121.GE50477@leia.lambermont.dyndns.org> <ef10de9a0605281430w6b35a3f7yff2b02123eb156b7@mail.gmail.com>

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On 5/28/06, Nikolas Britton <nikolas.britton@gmail.com> wrote:
> On 5/28/06, Hans Lambermont <hans@lambermont.dyndns.org> wrote:
> > What is the maximum file size on a dvd+r ?
> >
> > System : 5.4-RELEASE-p6
> > Command used : growisofs -Z /dev/cd0 -l -J -r burn/
> > In burn/ I have a backup file of size 4166629386 bytes and some smaller
> > files. In total 4577410 kB.
> >
> > growisofs ends normally :
> >  99.88% done, estimate finish Fri May 26 23:22:48 2006
> > Total translation table size: 0
> > Total rockridge attributes bytes: 519
> > Total directory bytes: 0
> > Path table size(bytes): 10
> > Max brk space used d724
> > 2287734 extents written (4468 MB)
> > builtin_dd: 2287744*2KB out @ average 2.4x1385KBps
> > /dev/pass0: flushing cache
> > /dev/pass0: closing track
> > /dev/pass0: closing session
> > # echo $?
> > 0
> >
> > An 'ls -la' of the mounted dvd+r shows :
> > ls: backup.bz2: Value too large to be stored in data type
> >
> > I can read the whole dvd without problems on a non-FreeBSD system. I
> > cannot find a limit in GROWISOFS(1m) or MKISOFS(8), but on
> > http://unix.derkeiler.com/Mailing-Lists/FreeBSD/questions/2005-12/msg01=
736.html
> > I read about a 2 GB maximum filesize for a file on a dvd. Is this true =
?
> > If so I think it should be mentioned in GROWISOFS(1m).
> >
>
> FreeBSD's implementation is correct, Linux is the one that's wrong,
> they decided to embrace and extend the standard. Theirs a 2GB cap per
> file on DVDs.

More specifically the ISO9660 file system, maybe UDF doesn't have this
limit, you should look into it and report back.

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