18 Jul
2006
18 Jul
'06
4:16 p.m.
-------------- Original message ----------------------
From: "Nico de Jong" <nico at farumdata.dk>
From: "Al Kossow" <aek at
bitsavers.org>
If It Helps ...........
Some place out there, there use to be a tape reading tool
that would read the tape backwards. I believe is was
run under linux ??? I have never used it.
- jerry
You should be able to connect the heads directly
to the preamp, and use
the
tapewizl directly. I was going to try recovering
HP and Apple 40meg tapes
this way using a TU58 transport. I haven't looked at the head geometry on
the different drives that take DC100 carts yet, though. I know I've
scanned
some documentation on the 3M transport, will need
to see if I've pdf'ed it
yet.
Would this principle work for recovery of 4mm (DAT) and 8 mm (Exabyte)
tapes? It happens regularly that customers ask if I can read "behind" a
small file they "happened" to write. I have no problems with 9 track and
3480/3490's.
Nico
18 Jul
18 Jul
5:11 p.m.
g-wright at att.net wrote:
-------------- Original message
----------------------
From: "Nico de Jong" <nico at farumdata.dk>
If It Helps ...........
Some place out there, there use to be a tape reading tool
that would read the tape backwards. I believe is was
run under linux ??? I have never used it.
- jerry
What type of tape? If QIC other than HP (QIC-24, etc) there is no way
that most of the drives did that. They actually read on all forward
operations,
and kept track of the recorded end of media. (not the holes).
It is possible that the Tandberg had such, but for most drives including the
Tandberg there is no published way to do that.
Some 1/2" tapes could to a read reverse, but most helical scan or qic
drives could not, due to the way the data was recorded, and retries
were accomplished.
also 3480 and 3490 can do read reverse.
jim
6731
days inactive
6732
days old
1 comments
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g-wright＠att.net -
jwstephens＠msm.umr.edu