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AX = 4404h BL = drive number (00h = default, 01h = A:, etc) CX = 000Ah (size of DSPACKET structure) DS:DX -> DSPACKET structure (see #01532)
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)
See Also: AX=4405h"DBLSPACE" - INT 2F/AX=4A11h/BX=0000h
Format of DoubleSpace DSPACKET structure: Offset Size Description (Table 01532) 00h WORD signature 444Dh ("DM") 02h BYTE command code 46h ('F') flush internal caches 49h ('I') flush and invalidate internal caches 03h WORD result code (ret) 4F4Bh ("OK") if successful, else unchanged 05h 5 BYTEs padding
Category: File/Disk Compression - Int 21h - D
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