Thanks to all of you who have offered help. Both "Mount c /Users" and "Mount c /Volumes" work fine, but the tilde variation and anything involving a space will not work for me in DOS. Nevertheless, I am making progress.

To mount the directory I wish to call "C," I think I must type "MOUNT c c:\" followed by the name of the appropriate folder on my hard drive. If I have understood the matter so far, then the next part must be where the trouble lies: Let's say that the "Users" folder on the Mac hard drive were the …