Date: 12 May 1996 00:00:01 EST

  Walter Roberson <roberson@ibd.nrc.ca> writes: If you've recorded audio
  on a DAT, recording data over it may not completely erase the audio
  marks. You have two options:

  - Never use tapes for data which have ever been used for audio.

  - Dave Olson <olson@sgi.com> suggests: If 'mt stat' says that the
    tape is an audio tape, eject it, do 'mt audio 0', reinsert it,
    do 'mt stat' again and hope that it's recognized as data.