you'd have to put the catalog at the end of the tape, but in that case you might as well rebuild the catalog by simply reading the tape on your way to the end (yeah, if the tape is partially unreadable blah blah backup of your backup...)
> you might as well rebuild the catalog by simply reading the tape on your way to the end
Right but is that actually possible? From what people are saying it sounds like it isn't, but you rightly assumed that it is because anything else would be incredibly dumb.