Function 21, subfunction 11 - enable/disable low-level access to HD.
Parameters:
eax = 21 - function number
ebx = 11 - subfunction number
ecx = 0/1 - disable/enable
Returned value:
eax = 0
Remarks:
Is used in LBA-read (
subfunction 8 of function 58
).
The current implementation uses only low bit of ecx.
To get current status use
subfunction 11 of function 26
.