INT 21 - Novell NetWare - WORKSTATION - GET DRIVE HANDLE TABLE
AX = EF00h
Return: ES:SI -> network shell's 32-byte drive handle table
Notes:  this function is supported by Advanced NetWare 1.0+
each byte in the drive handle table contains the directory handle for
the corresponding drive, or 00h if not mapped to a directory
SeeAlso: AX=EF02h,AX=EF03h,AX=EF04h

See also: 21EF01

21EF00 - Novell NetWare - WORKSTATION - GET DRIVE HANDLE TABLE