I think it's time to admit it: The real goal all along was to play games. That's comparatively simple, simply change to the B: drive and run the command ZORK1:

A0>B:
B0>zork1
ZORK I: The Great Underground Empire
Copyright (c) 1981, 1982, 1983 Infocom, Inc. All rights
reserved.
ZORK is a registered trademark of Infocom, Inc.
Revision 88 / Serial number 840726

West of House
You are standing in an open field west of a white house, with
a boarded front door.
There is a small mailbox here.

>open mailbox
Opening the small mailbox reveals a leaflet.

>take
(leaflet)
Taken.

I hope you don't mind a spoiler about this game: I've never won it myself, but I've been told it's important to pick up that leaflet, it'll be useful later.