> If these tapes come from a DLT8000 drive and you are trying 
> to use them in a DLT7000 drive then Networker will not be 
> able to. I did manage to do this some years ago with a 
> standalone DLT drive and some demo Unix software. Can't 
> remember the details now I'm afraid...

They tapes are from a DEC TZ89.  I did read that my newer VS80 drive has
some compatibility issues with tapes formatted on older systems, but my
specific drive is not mentioned.

I agree with the couple of people who point to hardware issues, not
Networker, and I thank everyone for their help so far.

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