When MySql is started in windows 7, the following error occurs: Table 'mysql. In in 'doesn' t exist.

When MySql is started in windows 7, the error Table 'mysql. plugin 'doesn' t exist solution: 64-bit Windows 7, install mysql5.27 _ win64, and customize the installation to D:/database/mysql. In the last step of initialization, the configuration file is always "not responded ". End the process and manually create my. INI file [client] port = 3335 [mysql] default-character-set = utf8 [mysqld] # The TCP/IP Port the MySQL Server will listen onport = 3335 basedir = "D: /database/mysql/"datadir =" D:/database/data/"character-set-server = utf8default-storage-engine = INNODB # Set the SQL mode to strictsql-mode =" STRICT_TRANS_TABLES, NO_AUTO_CREATE_USER, export "www.2cto.com max_connections = 100query_cache_size = 8Mtable_cache = 256tmp_table_size = bytes = 8 bytes = 256 K # *** INNODB Specific options *** quota = "D: /database/InnoDB/"tables = 1innodb_log_buffer_size = bytes = 15Minnodb_log_file_size = bytes = 10 www.2cto.com after writing the configuration file, I try to start mysqld directly in cmd, but it always fails, you can see the error log by time as the file name in D:/database/data/. There are two Table 'mysql. plugin 'doesn' t exist .................................. ............. [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql. host 'doesn' t exist has searched for many solutions on the Internet, but failed to solve my problem one by one. Later I saw another article: http://www.bkjia.com/database/201209/158224.html This article does not solve this problem directly, but it has inspired me to try to initialize the table in this way, but prompts that I do not have a mysql table !!! In this article, it is clear that "... insert "use mysql;" at the beginning of each file ;"...... "I followed this method, but it prompts that there is no mysql table! Www.2cto.com I went back to the mysql installation directory and checked it carefully. There was a data directory (D:/database/mysql/data) under the installation directory ), there is a mysql folder, which is the default database data storage location. Since I have modified the data storage location, can I directly copy all the files under this data file to D:/database/data? So I put all the files in the default data storage path D:/database/mysql/data in the mysql installation directory into D:/database/data/, and started mysqld again! I really don't know about the mysql database. The installation was successful before. For the first time I encountered this problem, mark it.