Yay, now I need some Osborne boot media!

One of the easier methods of crossing the old-new divide is to replace or add a 3.5" floppy drive to the XT and use 2D (not high-density) media to exchange. Leave the other 5.25" floppy where it is. Of course, you'll need the header-to-edge adapter and the power cable adapter, but AFAIK, they're still available--as well as drive bracket adapters. Later versions of MS-DOS (I don't recall exactly when, but I think it was around 3.3 or earlier, have a DRIVER.SYS installable driver to handle the full 720K)--otherwise, you may be restricted to writing 360K. The actual type 3.5" drive doesn't matter much--you can use an HD or DD drive, so long as it's media-sense and not host-directed for density (almost all are) and you use DD disks (or cover the media type aperture on the floppy.) --Chuck