Inp.:
AX = 71AAh
BH = 00h
BL = drive number (00h = default, 01h = A:, etc.)
DS:DX -> ASCIZ pathname to associate with drive letter
Return: CF clear if successful
CF set on error
AX = error code (see #01657)
7100h if function not supported
SeeAlso: AX=71AAh/BH=01h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#01620
INT 21
Category: D - DOS kernel
Inp.:
AX = 71AAh
BH = 02h
BL = drive number (01h = A:, etc.)
DS:DX -> buffer for ASCIZ pathname associated with drive letter
Return: CF clear if successful
DS:DX buffer filled
CF set on error
AX = error code (see #01657)
7100h if function not supported
Note: the specified drive number may not be 00h (default drive)
SeeAlso: AX=71AAh/BH=00h,AX=71AAh/BH=01h,INT 2F/AX=1000h,#01620
INT 21
Category: D - DOS kernel
Inp.:
AX = 71AAh
BH = 01h
BL = drive number (01h = A:, etc.)
Return: CF clear if successful
CF set on error
AX = error code (see #01657)
7100h if function not supported
Note: the specified drive number may not be 00h (default), and presumably not
the current drive either
SeeAlso: AX=71AAh/BH=00h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#01620
INT 21