DVD-RW cannot be formatted or blanked

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Markus Huber wrote:
> Dear people,
> 
> I try to blank resp. format a DVD-RW with following command and
> following output.
> 
> [markus at fc4 ~]$ dvd+rw-format /dev/cdrom
> * DVD\uffffRW/-RAM format utility by <appro at fy.chalmers.se>, version 4.10.
> Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
> Error trying to open /dev/cdrom exclusively ... retrying in 1 second.
> 
> Same error I get when I use:
> $ cdrecord blank
> 
> What am I doing wrong? It is the first time I use a DVD-RW on
> Fedora/Linux/at all, and Google is not my friend in this case.
> 
> Thank you for help
> Markus Huber
> 
Make sure the cd is *not* mounted. I ran into that same problem when it
is mounted.

~WILL~