I've got a DLT 4000 tape drive and I've got some DLT IV tapes, however they
were last used in a DLT 7000 drive, so they've been formatted at a higher
density.  I'm trying to convince Linux to erase them, using mt -f /dev/st0
erase.  However when I do that the tape goes for a bit then I get an I/O
error.  Does anyone know how to fix this?

Thanks.

-- 
Jon Schewe | http://mtu.net/~jpschewe | jpschewe at mtu.net
For I am convinced that neither death nor life, neither angels 
nor demons, neither the present nor the future, nor any 
powers, neither height nor depth, nor anything else in all 
creation, will be able to separate us from the love of God that 
is in Christ Jesus our Lord. - Romans 8:38-39