Unable to blank DVD+R R/W

[JD]

On 09/24/2010 05:59 PM, Wolfgang S. Rupprecht wrote:
> JD<jd1008 at gmail.com>  writes:
>>    Have HP DVD/RW (DVD+R) 16X. It is an orange colored back, and the
>> recording surface is blue.
>> It was recorded using a windows software.
>> My DVD-R/W drive is an 8X drive for DVD write, 4x DVD Rewrite, and 24X
>> for CD.
> You have to unmount the dvd first.  The current gnome machinery will
> mount the disc for you, even if you intend to erase it.  This will, of
> course, prevent you from being able to erase it.  Do a "df" or "mount"
> to get the name of the dvd's mounted fs's and do an unmount on it.  Then
> try the erase again.
>
> -wolfgang

Yes, I did unmount it before attempting to erase.
I am beginning to  think it may be a problem with
the drive's firmware.