Dustin J. Mitchell" <dustin AT zmanda DOT com> writes:

> Are there more details to add?  The 'mt' invocations in rc.conf may be
> helpful to others, for example.

FAQ:Why can I write new labels to my tapes but can't read the old ones?

Check your blocksize.  This behavior occurs when the tape unit is
set to have a particular block size (that may not match at read
time what was used to write a tape).  For example, in your rc.conf
file you may have:

/bin/mt -f /dev/nst0 defcompression 0
/bin/mt -f /dev/nst0 defblksize 0

and you should verify these commands are working correctly.

Steve
-- 
Steven J. Backus                        Computer Specialist
University of Utah                      E-Mail:  steven.backus AT utah DOT edu
Genetic Epidemiology                    Alternate:  backus AT math.utah DOT edu
391 Chipeta Way -- Suite D              Office:  801.587.9308
Salt Lake City, UT 84108-1266           http://www.math.utah.edu/~backus