title: InnoDB: File (unknown): 'read' returned OS error 0
body: <p>I need some help with MySql in xampp 3.2.1. The MySql Service won't start and I couldn't find the reason why because the error log file reports that it cannot read from an 'unknown file' and only returns the error 0. 
  I don't know what that means since it's basically saying that there is 0 error when it tries to read the unknown file.
  Here's the error log:</p>
  
  <pre><code>2015-01-20 10:36:12 760 [Note] Plugin 'FEDERATED' is disabled.
  2015-01-20 10:36:12 574 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
  2015-01-20 10:36:12 760 [Note] InnoDB: Using atomics to ref count buffer pool pages
  2015-01-20 10:36:12 760 [Note] InnoDB: The InnoDB memory heap is disabled
  2015-01-20 10:36:12 760 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
  2015-01-20 10:36:12 760 [Note] InnoDB: Memory barrier is not used
  2015-01-20 10:36:12 760 [Note] InnoDB: Compressed tables use zlib 1.2.3
  2015-01-20 10:36:12 760 [Note] InnoDB: Not using CPU crc32 instructions
  2015-01-20 10:36:12 760 [Note] InnoDB: Initializing buffer pool, size = 16.0M
  2015-01-20 10:36:12 760 [Note] InnoDB: Completed initialization of buffer pool
  2015-01-20 10:36:12 760 [Note] InnoDB: Highest supported file format is Barracuda.
  2015-01-20 10:36:12 760 [Note] InnoDB: The log sequence numbers 1665234 and 1665234 in ibdata files do not match the log sequence number 131153885 in the ib_logfiles!
  2015-01-20 10:36:12 760 [Note] InnoDB: Database was not shutdown normally!
  2015-01-20 10:36:12 760 [Note] InnoDB: Starting crash recovery.
  2015-01-20 10:36:12 760 [Note] InnoDB: Reading tablespace information from the .ibd files...
  2015-01-20 10:36:12 760 [ERROR] InnoDB: File (unknown): 'read' returned OS error 0. Cannot continue operation
  </code></pre>
  
  <p>Please Help.</p>