Commencing with Neo4j 3.0, the default location for your graph.db directory is under $NEO4J_HOME\databases\.
To change the path for the location of the database directory, edit the following parameters in the $NEO4J_HOME\conf\neo4j.conf file
# The name of the database to mount
dbms.active_database=graph.db
# Paths of directories in the installation.
dbms.directories.data=C:/MyNeoDB/
The usage of the forward slash character (/) in the value for dbms.directories.data is to be used and not the backslash () character which is what is typically used in Windows path names. +
Using the above example the graph.db will be recorded in C:\MyNeoDB\databases and the directory will be named graph.db.