Dual layer dvd burning
Kevin J. Cummings
cummings at kjchome.homeip.net
Tue Nov 20 03:17:43 UTC 2007
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 at rcn.com
cummings at kjchome.homeip.net
cummings at kjc386.framingham.ma.us
Registered Linux User #1232 (http://counter.li.org)
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