On Friday 16 December 2005 03:19, Peter Mueller wrote:
>Hi!
>
>Paul Bijnens wrote:
>> ...
>> The tapes with servo-tracks ARE able to detect EOT: that
>> information is found in their servo-tracks.  (I'm not sure how/if a
>> damaged servo track can result in premature End Of Tape.)
>>
>> The helical scan type drives detect End Of Tape as a hard write
>> error on the same spot.  They cannot distinguish the real end of
>> tape from a hard write error.  Some of the drives seem to guess the
>> end of tape by measuring the spindle speed of one or both the
>> reels, but can only approximately indicate "near" end of tape.
>
>Where are the old days, when ANSI tapes had these metal patches to
> indicate BOT and EOT ....  ;-)
>
Dunno, but FYI, the DDS tapes have about 1/16" diameter holes for 
optical detection of BOT & EOT, about a foot back from the leader 
splice on either end.

I saw that when it failed and ripped the tape in two on one drive back 
in jurrasic times.
>
>Bye, Peter
>WOTLmade

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