Personal Computer Technical Reference
Software
  Operating Systems
    MS-DOS or PC-DOS
      Services Summary
	Disk Management
Description					      Version	 Function
----------------------------------------------------- ---------- -----------
Disk Buffer Flush                                                Int\21f\0D
Disk Drive Default Get						 Int\21f\19
Disk Drive Default Set						 Int\21f\0E
Disk Drive Default Information Get				 Int\21f\1B
Disk Drive Information Get					 Int\21f\1C
Disk Free Space Get                                              Int\21f\36
Disk Transfer Address Get (DTA)                                  Int\21f\2F
Disk Transfer Address Set (DTA)                                  Int\21f\1A
Disk Verification Status Get (VERIFY)				 Int\21f\54
Disk Verification Status Set (VERIFY)                            Int\21f\2E