Re: Dual layer dvd burning

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John Summerfield wrote:
> Kevin J. Cummings wrote:
>> Tony Nelson wrote:
>>> At 6:26 PM -0500 11/19/07, Kevin J. Cummings wrote:
>>>  ...
>>>> While the drives are capable of holding 8GB of data, the filesystem is
>>>> *still* not capable of holding a file >= 2GB.  This is usually not a
>>>> problem when writing video onto these drives as the VOB filesize is <
>>>> 2GB anyways.  When using them to write backups of large files, games
>>>> must be played to get the data to fit.
>>> Why use a filesystem?  I just put a tar archive directly on the media.
>>> Growisofs doesn't care what file you burn.
>>
>> Uh, yes, it does.  It creates an ISO fs containing the file(s) you want
>> burnt, and the ISO fs is where the 2GB filesize limit is.
> 
> It doesn't insist on it, see the man page:
>        To use growisofs to write a pre-mastered ISO-image to a DVD:
> 
>             growisofs -dvd-compat -Z /dev/dvd=image.iso

We're still talking apples and oranges here.  You keep talking about
writing ISO filesystems that are already built.  I keep talking about
building the ISO filesystem to write to the DVD.  The 2GB filesize
restriction lies inside the definition of the ISO filesystem.  a 32 bit
filesize field can't hold more than a signed 2GB value.  AFAIK, it is
not an unsigned field.  I don't know the details, I just know it didn't
work when I tried it about 18 months ago....

-- 
Kevin J. Cummings
kjchome@xxxxxxx
cummings@xxxxxxxxxxxxxxxxxx
cummings@xxxxxxxxxxxxxxxxxxxxxxx
Registered Linux User #1232 (http://counter.li.org)

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