Date: 11-02-91 (10:18)              Number: 34054 of 34063
  To: PAUL ROBINSON                 Refer#: 34030
From: CRAIG HULVEY                    Read: 11-02-91 (20:46)
Subj: LIST OF VALID DRIVES          Status: PUBLIC MESSAGE
Conf: MAIN BOARD (0)             Read Type: MAIL FOR YOU (-)

Paul, a couple of ideas to get you started:

(1) DOS int 21h, Func 0eh will return the number of logical drives in
'al', so you'll know how many drives there are;

(2) DOS int 21h, Func 4409h will let you know whether the drive is
remote or local;

(3) The 'TRUENAME' command (DOS int 21h Func 60h) will return the 'true
name' of a file given it's 'SUBSTituted' entry.

