Int 2F/AH=DDh/BX=7844h

XDISK v3.32+ - INSTALLATION CHECK

AH = DDh
BX = 7844h ('xD')
CX = 4953h ('IS')
DX = 4B3Fh ('K?')
AL = desired drive (01h-1Ah) or 00h to check for xDISK on any drive
ES:DI -> 25-byte data buffer (see #03099)

Return:
AX = DDFFh if installed (on specified drive if AL nonzero on entry)
BX = 87BBh
DX = B4C0h
ES:DI buffer filled
CX,CF destroyed

Format of xDISK data buffer: Offset Size Description (Table 03099)

00h DWORD pointer to ASCIZ driver signature "xDISK unit:
X"

04h BYTE flag:
01h if disk linked to DOS, 00h if unlinked

05h BYTE flag:
01h if write protected, 00h if not

06h BYTE flag:
01h if root directory full, 00h if not

07h BYTE flag:
01h if free space uncompacted, 00h if compacted

08h BYTE resizing state:
00h not resizable, 01h resized, 80h resizable

09h BYTE flag:
01h inelastic resizable disk, 00h elastic 0Ah 2 BYTEs reserved

0Ch BYTE flag:
01h collapsed disk, 00h not collapsed

0Dh BYTE flag:
01h using all EMS, 00h some EMS free

0Eh BYTE flag:
01h password enabled, 00h disabled

0Fh BYTE flag:
01h password audio feedback, 00h no feedback

10h BYTE flag:
01h password video feedback, 00h no feedback

11h BYTE flag:
01h confirm changes, 00h no confirmation

12h BYTE flag:
01h terse display, 00h verbose display

13h BYTE flag:
01h click speaker on disk access, 00h no click

14h BYTE flag:
01h flash icon on disk access, 00h no icon flash

15h BYTE FAT entry size:
00h 12-bit, FFh 16-bit 16h WORD count of open files in RAM disk 18h BYTE unused

Category: Disk I/O Enhancements - Int 2Fh - X

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