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IOCTL_DISK_SET_PARTITION_INFO info  Overview  Group

The IOCTL_DISK_SET_PARTITION_INFO DeviceIoControl operation sets the partition type of the specified disk partition.

dwIoControlCode = IOCTL_DISK_SET_PARTITION_INFO;   // operation code 

lpInBuffer;          // address of input buffer 

nInBufferSize;       // size of input buffer 

lpOutBuffer = NULL;  // address of output buffer; not used; must be NULL 

nOutBufferSize = 0;  // size of output buffer; not used; must be zero 

lpBytesReturned;     // address of actual bytes of output 

 

Parameters

lpInBuffer
Points to a buffer that contains the partition data to be set. The data exists as a SET_PARTITION_INFORMATION data structure.
nInBufferSize
Specifies the size, in bytes, of the buffer pointed to by lpInBuffer, which must be large enough to contain a SET_PARTITION_INFORMATION data structure.
lpOutBuffer
Points to an output buffer. Not used with this operation. Set to NULL.
nOutBufferSize
Specifies the size, in bytes, of the buffer pointed to by lpOutBuffer. Not used with this operation. Set to zero.
lpBytesReturned
Points to a DWORD that receives the actual size, in bytes, of the data stored into lpOutBuffer. Not used with this operation. Set to NULL.

Return Values

If the operation succeeds, DeviceIoControl returns a nonzero value.

If the operation fails, DeviceIoControl returns zero. To get extended error information, call GetLastError.

Remarks

This device I/O control operation is for disk devices. Floppy disk drivers, however, need not handle this operation.

See Also

DeviceIoControl, IOCTL_DISK_GET_PARTITION_INFO, SET_PARTITION_INFORMATION


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