Search index is located at:
directoryPath=”[appDataPath]\Index”
Index folder can be deleted, an then triggered by this tool (click start indexing).
Url: http://[mysite]/EPiServer/CMS/Admin/IndexContent.aspx
The index folder should now be created if all configuration is correct.
Troubleshooting: Troubleshooting EPiServer search indexing-service | Hans Kindberg
Setup and configuration for search: Svein Aandahl’s Blog: How to install EPiServer Search for EPiServer CMS 7