It is true. Inter-block gaps are huge and easy to spot/splice.
That is why writing short tape blocks wastes so much tape.
On 6/27/19 8:21 AM, Warner Losh via cctalk wrote:
I've also heard people tell stories of using this
fob to find the end of
the marks and records on mag tape to splice together tapes that had become
broken and ruined (so they'd cut the damaged records out at record
boundaries to recover at least some of the data on ANSI formatted tapes). I
don't know if this was a tall tale designed to impress over a beer, or the
sad confessions of someone that had gone through a lot of pain and needed
to share...
Warner