Dfree - By Chris Tegarden, Columbus, Ohio.

This is a silly little thing I wrote to understand the
disk and error handling functions illustrated in the
Turbo C reference book. It gets the number of active
drives from DOS, then attempts to find the free disk
space on each. If a drive has no disk in it, Dfree tells
you so, skips that drive and goes to the next drive, if
any. It seems to work with all the ramdisk drivers I have
(public domain ones, of course) and runs fine on my Taiwan-
built PC clone. I've included the source code; it's probably
as small as a program can be and still be useful.