On 11-06-02 3:55 PM, Trevor Cordes wrote:
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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I'm going to throw out a couple of ideas and see who salutes...
If possible, you can use some text tools such as par2 and rar to break the file into smaller, recoverable chunks.
Another possibility would be to see if there is anything in fuse available for UDF. This way you can create the image and see what tools are available for burning.
Chris H. managed to find a source of cheap DVD-DL blanks. Dollarama occasionally has them on sale at three for $2.00. I mentioned this to someone who said they could get them cheaper somewhere else, but didn't say where. Anyhow the only Dollarama I found them at was Pembina near Bishop Grandin in the strip mall with Staples.
Oddly enough, I remember burning a 7GB movie file to a DVD-DL with k3b. It didn't complain at all. It went through the verify process and there were no complaints there either.
Later Mike