You should be able to check off the overwrite options in NBU though
and that should take care of it.

On 4/30/07, Justin Piszcz <jpiszcz.backup at gmail.com> wrote:
> I'd go for the erase, depends on the DLT version perhaps(?) but for
> LTO-X tapes, they say right on the package NOT to degauss as a measure
> of erasure.
>
> On 4/27/07, Keith W <keith at cydonia.net> wrote:
> > I have a hundred or so DLT IV tapes that were in a different/unknown
> > tape stacker. I need to get them cleaned up so that my Overland machine
> > will properly see them. Will a simple erase (mt -f /dev/st0 erase) clean
> > them up enough to be seen by the newer DLT tape machine or do I need to
> > have them degaused?
> >
> > +-----------------------+
> > +       Keith           +
> > +-----------------------+
> >
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>