想改变U盘的活动分区状态，怎么也不成功

[snowman1101]

这个IOCTL_DISK_SET_PARTITION_INFO 是在msdn上找的，是不是我的用法从根本上就错了，执行完分区都没有了

//http://msdn.microsoft.com/en-us/library/aa365451(v=vs.85).aspx 
	 PARTITION_INFORMATION PartInfo;

	HANDLE hDev = CreateFile("\\\\.\\U:", GENERIC_READ| GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);

	if(!DeviceIoControl(hDev,  IOCTL_DISK_GET_PARTITION_INFO,   NULL,   0,   &PartInfo,   sizeof(PartInfo),   &dwSize,   0)) 
     { 
      CloseHandle(hDev); 
      return 0 ; 
     }
		if (PartInfo.BootIndicator!=TRUE)
		{
				PartInfo.BootIndicator=TRUE;
				PartInfo.RewritePartition=TRUE;
					if(!DeviceIoControl(hDev, IOCTL_DISK_SET_PARTITION_INFO, &PartInfo, sizeof(PartInfo), NULL, 0, &dwSize, NULL))
					{ 
						CloseHandle(hDev); 
						 return 0 ; 
					}

					      
					 DeviceIoControl(hDev, IOCTL_DISK_UPDATE_PROPERTIES, NULL,0, NULL,0, &dwSize, NULL)  
					
      CloseHandle(hDev); 

[snowman1101]

又发现一个
typedef struct _PARTITION_INFORMATION_MBR {
BYTE PartitionType;
BOOLEAN BootIndicator;
BOOLEAN RecognizedPartition;
DWORD HiddenSectors;
} PARTITION_INFORMATION_MBR, *PPARTITION_INFORMATION_MBR;

慢慢研究，等待大家帮助

[snowman1101]

还是不行 再等一天

[chunyou128]

想改变U盘的活动分区状态
-----------------------------
改变可用空间？
改变盘符？

[辰岡墨竹]

做这些操作必须LockVolume吧。