DVD burning - mkisofs max size allowed

[Robin Laing]

John Wendel wrote:
> A. Lanza wrote:
> 
>> El jue, 24-02-2005 a las 08:06 -0600, Jeff Vian escribió:
>>
>>> On Thu, 2005-02-24 at 14:12 +0100, A. Lanza wrote:
>>>
>>>> Hi list,
>>>>
>>>> i'm trying to burn a DVD using k3b, as i usually do for CD burning. I'm
>>>> using 4,7GB size DVD-R. The problem is that i cannot burn a 4,4GB. 
>>>> file.
>>>> The file is exactly 4,613,704,668 bytes long.
>>>>
>>>> The message i get from k3b is the following:
>>>>     /usr/bin/mkisofs: Value too large for defined data type
>>>> and then
>>>>     File <file> is too large - ignoring
>>>>
>>>> It seems like the problem is the file size, but that file should fit in
>>>> a DVD, shouldn't it? Is there any limit in the size of files written to
>>>> DVD?
>>>>
>>>> Thanks,
>>>>
>>>> Alf
>>>>
>>>
>>> I create a data DVD by using { file ->  new project -> new data DVD
>>> project } then creating the file list to be included with drag-n-drop.
>>>
>> Yes, i'm doing just that way. In fact, when i drag and drop the files,
>> the bar indicating space occupied on the DVD remains in the green zone,
>> doesn't reach the DVD limit.
>>
>>
> 
> Remember that when you burn a file to a DVD, growisofs has to convert 
> the file to an ISO filesystem image and then burn this to the DVD. This 
> process is adding to the number of bytes making the image too large for 
> the disk. Perhaps K3B's size calculation needs some adjustment to 
> account for this size expansion ???
> 
> John
> 

This would be easy to test.  Use k3b to create just the iso and see 
what size it is.  Mount the iso as a loop file to see if the data is 
correct.

After this test it would be easy to file a bug report.

My K3b only shows 4.4gig as available, even with a 4.7gig DVD in.

As a test I created a set of files that was 794B less than the 4.4GB 
that was showing in my K3b status bar.  I had a Maxell DVD-R 4.7GB DVD 
to burn on.  On creating only the image, I get an ISO file size of 
4,703,707,136.

I didn't try to burn it though.


-- 
Robin Laing