Int 2F Fn 4A11  - Dblspace.bin - "activatedrive" - Mount Compressed Drive  [k]

   AX = 4A11h
   BX = 0005h
   DL = drive number (0=A:) to assign to new drive
   ES:SI -> activation record (see #2491)

Return: status returned in activation record (see #2492)

See Also: AX=4A11h/BX=0000h,AX=4A11h/BX=0006h

Format of DBLSPACE activation record:
Offset Size    Description (Table 2491)
 00h  2 BYTEs  signature "MD" (4Dh 44h)
 02h   BYTE    4Dh ('M') mount command
 03h   BYTE    error code (set to FFh before calling) (see #2492)
 04h   BYTE    host drive number (0=A:)
 05h   ??? DISK_UNIT structure (not documented)

(Table 2492)
Values for DBLSPACE Mount error code:
 00h   successful
 01h   drive letter not available for DoubleSpace
 02h   drive letter already in use
 03h   no more disk units (increase MaxRemovableDrives in .INI)
 09h   CVF too fragmented

See Also: #2491,#2490