> I've bulkerased them and 'inited them under VMS with zero problems.
> If the drive then are formatted (inited) on is off however the portability
> of the tape may be poor.  They are serpintine or block mode and the basic
> init is the calibration tracks and marks.  There are issues with moveing
> between tk50 and tk70 where bulk erasing is required if you wish to write
> on the tape using TK50.  TK70 media however does not take as well for some
> reason to this..

Is there a DEC doc available online (or in print if anyone has a spare copy)
that covers the actual layout of TK50 tapes?  I have bits and pieces of
the grey wall VMS doc set, but offhand I don't recall seeing anything
that detailed on the format of tapes.

Any insights appreciated.

Thanks

Bob