C:\Users\YOUSTONG>mysqld --console
161018 23:20:30 [Warning] Can't create test file C:\Program Files\MySQL\MySQL Server 5.5\data\YOUSTONG-PC.lower-test
161018 23:20:30 [Warning] Can't create test file C:\Program Files\MySQL\MySQL Server 5.5\data\YOUSTONG-PC.lower-test
161018 23:20:30 [Note] Plugin 'FEDERATED' is disabled.
161018 23:20:30 InnoDB: The InnoDB memory heap is disabled
161018 23:20:30 InnoDB: Mutexes and rw_locks use Windows interlocked functions
161018 23:20:30 InnoDB: Compressed tables use zlib 1.2.3
161018 23:20:30 InnoDB: Initializing buffer pool, size = 128.0M
161018 23:20:30 InnoDB: Completed initialization of buffer pool
161018 23:20:30 InnoDB: Operating system error number 5 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory. It may also be you have created a subdirectory
InnoDB: of the same name as a data file.
InnoDB: File name .\ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.
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