Int 21 Fn DB  - Novell Netware - Workstation - Get Number Of Local Drives  [N]

   AH = DBh

Return: AL = number of local disks as set by LASTDRIVE in CONFIG.SYS

Note:  this function is supported by NetWare 4.0+, Advanced NetWare 1.0+, and
     Alloy NTNX

See Also: AH=0Eh