code: private boolean readMetaHeader()
      throws IOException
    {
      try (ReadStream is = openRead(0, META_SEGMENT_SIZE)) {
        int crc = 17;
        
        long magic = BitsUtil.readLong(is);
        
        if (magic != KELP_MAGIC) {
          System.out.println("WRONG_MAGIC: " + magic);
          return false;
        }
        
        crc = Crc32Caucho.generate(crc, magic);
        
        _nonce = BitsUtil.readInt(is);
        crc = Crc32Caucho.generateInt32(crc, _nonce);
        
        int headers = BitsUtil.readInt(is);
        crc = Crc32Caucho.generateInt32(crc, headers);
        
        for (int i = 0; i < headers; i++) {
          int key = BitsUtil.readInt(is);
          crc = Crc32Caucho.generateInt32(crc, key);
          
          int value = BitsUtil.readInt(is);
          crc = Crc32Caucho.generateInt32(crc, value);
        }
        
        int count = BitsUtil.readInt(is);
        crc = Crc32Caucho.generateInt32(crc, count);
        
        ArrayList<Integer> segmentSizes = new ArrayList<>();
        for (int i = 0; i < count; i++) {
          int size = BitsUtil.readInt(is);
          crc = Crc32Caucho.generateInt32(crc, size);
          
          segmentSizes.add(size);
        }
        
        int crcFile = BitsUtil.readInt(is);
        
        if (crc != crcFile) {
          System.out.println("MISMATCHED_CRC: " + crcFile);
          return false;
        }
        
        _metaSegment = new SegmentExtent10(0, 0, META_SEGMENT_SIZE);
        
        _segmentId = 1;
        
        _metaOffset = is.position();
      }
      
      return true;
    }
docs: Reads the initial metadata for the store file as a whole.