have a working tape drive. I have rebuilt the drives
on other HP but never
bothered to in the 9845s.
The drives in my 9845B are indentical to the drives in the
9815/9825/9831/9877 units. If you've rebuilt one of those drives, you
should be able to (temporarily) fit it to the 9845.
The cotnroller is different, however. It doesn't even use the same I/O
bus signals as the controller in the 9825/9831, so I assume it's not even
software compatible.
-tony