Unable to blank dvd/rw media

[Klaus-Peter Schrage]

Am 07.03.2015 um 15:15 schrieb Ed Greshko:
>
> I hardly use optical media these days.  But I happen to find an old Philips DVD+RW disk in a drawer.  I used the cdrecord -v blank=all command on it and it worked just fine.  I didn't save the output it created but there was a HINT telling me I really should be using the dvd+rw-format command.
>

Perhaps this depends on the types of drive or media. I used 'cdrecord -v 
blank=all' on two different DVD+RW brands and got error outputs similar 
to the op's, whereas the same command erased a CD-RW just fine.