Unable to erase DVD disc...

[hellraiser]

Recently i burnt a longhorn's 733 MB iso image on a SAMSUNG's DVD-RW. Now i am unable to erase my disc.
Whenever trying to execute erase command from nero, it starts to erasing ... but data still exists on DVD. Also tried firmware upgrades....but doesn't helps. I got -

Nero ultra edition 6.0
Sony q-120a DVD rewriter

any suggestions

 

[shashank4u]

try to erase it with other companies dvdwriters like lg or liteon ..

 

[phreak0ut]

Bad, bad disc. No space for you This happened to me on CD-RW as well. Finally I had to throw it