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Re: DVDs created with too large files



At 5:27 PM +0000 11/2/03, Gary Houston wrote:
>I have been using dvd+rw-tools (5.13.4.7.4) and mkisofs (cdrtools 1.11a29)
>to write backups to DVD.  This generally works.  However I encountered
>a problem when one of the files was 2351679431 bytes in size: the disk
>was written with no errors reported, but on testing proved to be unreadable
>to linux 2.4.21.  On mounting the disk a warning was reported:
>
>Warning: defective CD-ROM.  Enabling "cruft" mount option.

"Defective" CD-ROM is a misleading statement.
"Interchange Level 3 ISO-9660 volumes are not handled by this OS" would be
more accurate.

>	/*
>	 * The ISO-9660 filesystem only stores 32 bits for file size.

But the ISO-9660 _standard_ stores 32 bits for the size of each _extent_
and there can be a virtually unlimited number of _extents_ in a single file
at ISO-9660 Interchange Level 3.



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