On Fri, 30 Dec 2005, Uwe Dippel wrote:
> Tried the last hours to debug a growisofs problem; which finally turned
> out to be a UDF problem; after I found
> http://groups.google.com.my/group/mailing.openbsd.bugs/browse_frm/thread/cc83628ed178e43c/433bf632f7ad2f55?tvc=1#433bf632f7ad2f55
>
> growisofs writes proper DVDs of any size; only mount doesn't work; any
> file larger than 2 GB will show with wrong content and a negative size.
> No wonder, it mounts as iso9660.
> But how do I get it mounted as udf ? I tried
> mount -t udf /dev/cd0c /dvd, but it comes with a blue kernel message:
> udf-mount: enforcing read-only mode
> mount -t udf /dev/cd0c dvd
> mount_udf: mount: Invalid argument
> while
> mount /dev/cd0c dvd
> is fine, but as iso9660
>
> The FAQ says:
> The newer Universal Disk Format (UDF) filesystem on some
> DVDs is not supported. However, almost all DVD-Video and DVD-ROM discs use the
> UDF bridge format, which is a combination of the DVD MicroUDF (subset of UDF
> 1.02) and ISO 9660 file systems. This bridge format provides backwards
> compatibility for operating systems which do not yet support UDF.
>
> And man mount_udf says:
> The mount_udf command attaches a UDF filesystem (typically found on a
> DVD) residing on the device special to the global filesystem namespace at
> the location indicated by node. This command is invoked by mount(8) when
> using the syntax
>
> mount [options] -t udf special node
>
> Can someone please shed a light on this, thanks,
What does disklabel cd0 say?
-Otto
