ISO9660 4GB directory structures boundary limit and growisofs

Tim Kientzle kientzle at
Sat Apr 17 16:31:20 UTC 2010

Paul B Mahol wrote:
> It is apparently not possible to make use of -use-the-force-luke=4gms
> on FreeBSD when appending new session after 4GB. Mounted disk
> afterwards  show nothing.
> Should we allow it like linux does?

Are you claiming there is a problem when FreeBSD reads such
images or a problem with creating such images?  What
programs are you using?

This sounds like a pretty unsurprising 32-bit truncation
bug:  the filesystem structures in ISO9660 are all sector
numbers so 8TB should be the natural limit (4G sectors
times 2k bytes/sector).


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