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AX = 4404h BL = drive number (00h = default, 01h = A:, etc) CX = 0006h DS:DX -> DoubleTools structure (see #01534)
Return:
CF clear if IOCTL successful -- check DSPACKET for actual status AX = number of bytes actually transferred CF set on error AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Note: The Transporter device driver has the signature 55h 61h 50h 74h ("DaPt") twelve bytes after it beginning
Format of DoubleTools structure: Offset Size Description (Table 01534) 00h WORD (call) signature 55h AAh (ret) signature 78h 70h ("xp") 02h WORD (call) signature 52h 16h (ret) ??? 04h WORD (ret) segment of driver's DS (same as its PSP)
Category: File/Disk Compression - Int 21h - D
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