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#define INCL_DOSDEVIOCTL
 
USHORT DosDevIOCtl(pbDrive, pbCommand, 0x0003, 0x0008, hDevice)
PBYTE pbDrive;      /* pointer to variable with drive number  */
PBYTE pbCommand;    /* pointer to variable with command       */
HFILE hDevice;      /* device handle                          */
 
The DSK_SETLOGICALMAP function sets the logical-drive mapping for a block
device.
 
Parameter  Description
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pbDrive    Points to the variable that contains the logical-drive number.
           This can be 1 for drive A, 2 for drive B, and so on. When the
           function returns, it copies the specified drive's current
           logical-drive number to the variable. If only one logical device
           is mapped to the physical drive, the function sets the variable
           to zero.
 
pbCommand  Points to the variable that contains a reserved value. The value
           must be zero.
 
hDevice    Identifies the disk drive 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_GETLOGICALMAP
 
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