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Message-Id: <3BB94EAA.5040909@arlut.utexas.edu>
Date: Mon, 01 Oct 2001 22:20:42 -0700
From: tim scoggins <scoggins AT arlut DOT utexas DOT edu>
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To: cygwin AT cygwin DOT com
Subject: dd and AIT tapes
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I am using 'dd' to copy from disk files and from 4mm tapes to AIT-1 
tape.  The resulting files have extra bits;  specifically, 64 bytes of 
zeros are added to the files.  I don't have this problem when writing 
4mm tapes.  I am using cygwin 1.3.3 under Windows 2000.

I also have AIT tapes that I cannot read at all.  Admittedly, these 
tapes are a little weird.  They were written with a DOS program 
(autonomous collection trying to conserve power) and begin with two 
EOFs, data, 4 EOFs, data (this wasn't my idea).  I can skip files with 
mt, but when I try to dd I get
    0+0 records in
    0+0 records out
If I try two or three times, I also get "Permission denied".  I'm pretty 
sure I'm giving dd the right block size.


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