If the drive
will reformat a pack and will then pass the read/write
diagnostic using it, then the only problem with the drive is alignment.
Of course, it is possible that the pack could have been written to
by an out of alignment drive and his drive is OK.
Correct. What I should have said is that only when the drive will format
and read/write to a pack do you consider alignment. At that point I'd put
an alignment pack in and see what the catseye pattern looked like. If it
was fine, then I'd assume the packs I couldn't read had been written on a
misaligned drive.
-tony