获取硬盘的容量

NSFileManager*fm = [NSFileManagerdefaultManager];

    NSDictionary*fattributes = [fm attributesOfFileSystemForPath:NSHomeDirectory()error:nil];

     

  

    NSLog(@"%lldG",[[fattributesobjectForKey:NSFileSystemSize]longLongValue]/1000000000);

    NSLog(@"%lldG",[[fattributesobjectForKey:NSFileSystemFreeSize]longLongValue]/1000000000);