I guess you are stuck on this one.
The drive obviously was pre-loaded in manufacture.
Depending on you personal circs re using small tools
and contacts with similar machines etc.,
The drive could be taken out and put into another machine with CD and floppy built in.
Toshiba drives live under the battery and slimply held in place in a cage with a screwed lock.
Undo the lock and slide it back from the socket.