"Logging" MySQL 5.7.20 installation appears ... mysql-5.7.20-winx64\data\is_writable ' errcode:2-No such file or directory

New to a company, install mysql5.7.20 when there is a problem (the installation procedure can refer to this):

... mysql-5.7.20-winx64\data\is_writable ' errcode:2-No such file or directory

To see the problem is generally clear that the My.ini directory is wrong, but no matter how the inspection can not see where the problem.

# set MySQL installation directory basedir=d:\ruanjian\mysql-5.7.20-winx64# set the data storage directory for the MySQL database datadir=d:\ruanjian\mysql-5.7.20-winx64 \data

A variety of toss, repeat check, repeated installation, but still error.

The next day to come over, think about, will not be replaced by two//, so the above directory changed to the following form

# set MySQL installation directory basedir=d:\\ruanjian\\mysql-5.7.20-winx64# set the data storage directory for the MySQL database datadir=d:\\ruanjian\\ Mysql-5.7.20-winx64\\data

The results are normal ... ORZ ...

"Logging" MySQL 5.7.20 installation appears ... mysql-5.7.20-winx64\data\is_writable ' errcode:2-No such file or directory