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#define INCL_DOSDEVIOCTL
 
USHORT DosDevIOCtl(pfNonRemovable, pbCommand, 0x0020, 0x0008, hDevice)
PBYTE pfNonRemovable;    /* pointer to removable/nonremovable flag */
PBYTE pbCommand;         /* pointer to variable with command       */
HFILE hDevice;           /* device handle                          */
 
The DSK_BLOCKREMOVABLE function indicates whether the block device is
removable.
 
Parameter       Description
────────────────────────────────────────────────────────────────────────────
 
pfNonRemovable  Points to the variable that receives the medium type. This
                variable is 0x0000 if the medium is removable or 0x0001 if
                it is nonremovable.
 
pbCommand       Points to the variable that contains a reserved value. This
                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
 
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