Int 21/AX=F400h

DoubleDOS - INSTALLATION CHECK/PROGRAM STATUS

AX = F400h

Return:
AL = program status 00h if DoubleDOS not present 01h if running in visible DoubleDOS partition 02h if running in the invisible DoubleDOS partition

See Also: AX=E400h - AH=F5h"DoubleDOS"

Category: DOS-Based Task Switchers/Multitaskers - Int 21h - D

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