安裝完IntelliJ IDEA之後，預設會在windows的系統盤使用者資料夾中建立配置等檔案，而且預設儲存在C盤，會造成C盤檔案越來越多，影響系統執行速率，如何將配置遷移到非系統盤呢，很簡單，以E盤為例：

找到安裝路徑找到安裝路徑下有個屬性檔案idea.properties（比如：D:\Program Files\JetBrains\IntelliJ IDEA 14.0.3\bin），開啟此檔案，前面三行就說了：

# Use ${idea.home} macro to specify location relative to IDE installation home.
# Use ${xxx} where xxx is any Java property (including defined in previous lines of this file) to refer to its value.
# Note for Windows users: please make sure you're using forward slashes (e.g. c:/idea/system).
 

修改這四行配置，如下：

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE config folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.config.path=E:/IntelliJ IDEA/.IntelliJIdea14/config

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE system folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.system.path=E:/IntelliJ IDEA/.IntelliJIdea14/system

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to user installed plugins folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.plugins.path=E:/IntelliJ IDEA/.IntelliJIdea14/plugins

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE logs folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.log.path=E:/IntelliJ IDEA/.IntelliJIdea14/system/log