Configuring wamp mysql to use innodb not working - error 123 -

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i in error log (wamp):

140205 22:57:41  innodb: operating system error number 123 in file operation. innodb: operating system error numbers described @ innodb: http://dev.mysql.com/doc/refman/5.1/en/operating-system-error-codes.html innodb: file name c:\wampin\mysql\mysql5.5.8\data\ibdata1 innodb: file operation call: 'create'. innodb: cannot continue operation.

i don't understand else have uncommented commands , changed paths appropriately:

# uncomment following if using innodb tables innodb_data_home_dir = c:\wamp\bin\mysql\mysql5.5.8\data/ innodb_data_file_path = ibdata1:10m:autoextend innodb_log_group_home_dir = c:\wamp\bin\mysql\mysql5.5.8\data/ innodb_log_arch_dir = c:\wamp\bin\mysql\mysql5.5.8\data/ # can set .._buffer_pool_size 50 - 80 % # of ram beware of setting memory usage high innodb_buffer_pool_size = 50m innodb_additional_mem_pool_size = 10m # set .._log_file_size 25 % of buffer pool size innodb_log_file_size = 50m innodb_log_buffer_size = 80m innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 50

please advise.

in configuration file, need specify paths escaped windows-style paths using double backslashes (\\), example:

innodb_data_home_dir = c:\\wamp\\bin\\mysql\\mysql5.5.8\\data\\

in case \b getting replaced because it's valid control code, causing path become invalid. believe use forward slashes(/) instead of double backslashes (\\).


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