[RndTbl] burning large files

Trevor Cordes trevor at tecnopolis.ca
Thu Jun 2 15:55:52 CDT 2011

I need to burn a 5GB+ data file to DVD-DL, using command line tools in 
linux.  Obviously burning small (sub 2 or 4GB) files to DVD is easy using 
mkiso and cdrecord, or whatever.  Now I need to burn a large file and I'm 
discovering it's not so easy.

It turns out there's a file size limit for ISO9660 of 4GB.

Doing a bit of research, it looks like you must burn UDF format instead of 
ISO, but the UDF burning utilities on linux are limited.

mkisofs has options -udf and -allow-limited-size which may solve my 
problem, though the "alpha" labelling of it doesn't inspire confidence.

My other issue is I need to know exactly how much usable (non-FS) data 
space I get out of a DVD-DL.  That number is well known down to the byte 
level for ISO9660 on DVD (single layer).  I'm having a really hard time 
finding hard numbers for DVD-DL and UDF overhead.  One would assume you 
get DVD-SL x 2 raw space.  And one could probably guess at some reasonable 
overhead for UDF.  Still, hard numbers will help me avoid coastering a 
multi-$$ DVD-DL blank.

Hopefully someone has some experience with this?


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