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include vmm.inc include blockdev.inc mov ax, 1607h ; device callout mov bx, BlockDev_Device_ID ; block device ID mov cx, BlockDev_API_Hw_Detect_Start int 2Fh |
The BlockDev_API_Hw_Detect_Start function notifies terminate-and-stay-resident programs (TSRs) and MS-DOS device drivers that a virtual block device is performing hardware detection. This may, for example, disable a write-behind cache.