hmm... after reading the post again I see that I ddint answer your question.
However, there was some information that was actually useful.
Use Transdisk. The command to copy to two disks looks something like this:
transdisk >RAM:df0a.adf -s 0 -e 39
this will write half of the adf to a PC formatted floppy in drive df0.
do it again for the next half on another PC formatted disk:
transdisk >RAM:df0a.adf -s 40 -e 79
After copying both files to PC use this command to combine them on your PC:
copy /b df0a.adf+df0b.adf df0.adf
That makes a file called df0.adf and is the original adf file on the amiga.