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#define INCL_DOSDEVIOCTL
 
USHORT DosDevIOCtl(pbDrive, pbCommand, 0x0021, 0x0008, hDevice)
PBYTE pbDrive;      /* pointer to variable for drive number */
PBYTE pbCommand;    /* pointer to variable with command     */
HFILE hDevice;      /* device handle                        */
 
The DSK_GETLOGICALMAP function retrieves the mapping of a logical drive.
 
Parameter  Description
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pbDrive    Points to the variable that receives the logical-drive number.
           This can be 1 for drive A, 2 for drive B, and so on. The function
           sets the variable to zero if only one logical drive is mapped to
           the physical drive.
 
pbCommand  Points to a variable that contains a reserved value. The value
           must be zero.
 
hDevice    Identifies the physical device that receives the device-control
           function. The handle must have been created previously by using
           the DosOpen function.
 
Return Value
 
The return value is zero if the function is successful or an error value if
an error occurs.
 
See Also
 
DosOpen, DSK_SETLOGICALMAP
 
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