If it was an old DOS/Windows laptop, you could just use INTERLNK via COM or parallel port. I have to post that, it's just such a nostalgic memory copying files like that.
So if somebody needs to do it: Dosbox + USB-RS232 adapter and the right cable. INTERLNK/SRV was included with DOS 6.0 and later, so it's rather easy to find.
So if somebody needs to do it: Dosbox + USB-RS232 adapter and the right cable. INTERLNK/SRV was included with DOS 6.0 and later, so it's rather easy to find.