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From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  1/2" tape conversion to 1/4" - urgent question
Message-ID: <9010311400.AA23272@richter.mit.edu>
Date: 31 Oct 90 14:00:07 GMT
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You *must* specify which software format the tapes are! If the tapes were
written with Apollo's wbak/rbak system, the 9-track (1/2") and catridge
(1/4" QIC-24) formats are incompatible. Ie. the data written on the tape
is different in addition to the physical differences in the tape. If this
is the case, you *must* get an Apollo  system to read 1/2" magtape and
unpack the files to disk, and then write the 1/4" cartridge tape fresh
from disk. If the tapes are Unix "tar" tapes, you still have a problem.
The pre-SR10 cartridge tape driver produced "tar" tapes that were not
normally readable by other non-Apollo systems. If I remember correctly,
you had to use the "-b 1" blocking factor in order to get them to work.


 -- David Krowitz

krowitz@richter.mit.edu   (18.83.0.109)
krowitz%richter.mit.edu@eddie.mit.edu
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