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#define INCL_DOSDEVIOCTL
 
USHORT DosDevIOCtl(0L, pbCommand, 0x0000, 0x0009, hDevice)
PBYTE pbCommand;    /* pointer to variable with command */
HFILE hDevice;      /* device handle                    */
 
The PDSK_LOCKPHYSDRIVE function locks the physical drive and any of its
associated logical units.
 
Parameter  Description
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pbCommand  Points to the variable that contains a reserved value. The value
           must be zero.
 
hDevice    Identifies the disk-drive device that receives the device-control
           function. The handle must have been created previously by using
           the DosPhysicalDisk function.
 
Return Value
 
The return value is zero if the function is successful or an error value if
an error occurs.
 
See Also
 
DosPhysicalDisk, PDSK_UNLOCKPHYSDRIVE
 
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