Overcoming the 2GB limit in writing a dvd iso to disk
Tony Nelson
tonynelson at georgeanelson.com
Thu Nov 30 18:22:32 UTC 2006
At 8:59 PM -0500 11/29/06, Kevin J. Cummings wrote:
>Jeffrey D. Yuille wrote:
>> Hello,
>>
>> Does anyone know how to overcome the 2gb limit in writing a dvd iso
>> image to a dvd-r disk. I am currently using Fedora Core 6 and I just
>> bought a dvd burner. What I am finding out is that there is nothing
>> wrong with the k3b software I am using, but that there is a file size
>> limit of 2gb in trying to burn the software. How do I overcome this? I
>> have never run into a problem like this before in buring iso images and
>> I would certainly appreciate any help available.
>
>I just went through this on FC5. What I discovered was, you *can* burn
>an image of 4.7GB or 8GB in size, but none of the files in that image
>can exceed 2GB in size (this seems to be a mkisofs limitation).
...
It's as much a limitation of the ISO9660 format, where the maximum size of
a file fragment is 2 GB. Some OSs handle fragmented files on ISOs, some do
not.
>So,
>what I did was to break up the large files into smaller chunks. (Its
>just as easy to cat them back together and pipe that output to a tar
>command.) If you look at DVD movies, you'll see that each VOB file is
>around 1GB in size (max), so they don't have that problem anyways.
>
>I don't think there is another solution for for large files, yet.
There is, if compatibility is not an issue.
Actually, what I do is dump or tar directly to a DVD. I set the "tape
size" in each program to the size of a DVD, as blocks in the appropriate
blocksize. So I'm making DVDs with no filesystem. I believe that this is
/more/ future-proof, as, in the future, rather than getting a working
then-old-style filesystem working and a then-old-style restore or tar
working, I only have to do the latter. I write the DVDs with "growisofs
-dvd-compat -Z /dev/dvd=/tmp/dvd".
--
____________________________________________________________________
TonyN.:' The Great Writ <mailto:tonynelson at georgeanelson.com>
' is no more. <http://www.georgeanelson.com/>
More information about the users
mailing list