Unable to locate index after restart

Hi,

Recently, I found disk is full and on the same disk I was running
ElasticSearch which cause me disk space exception.

After that I made enough disk space and restarted the ElasticSearch.

Problem:
It start without any exception but I found no index recovered. All
the index I have created are now lost.

Please suggest, what should I do and where is the problem?

Thanks,

Pulkit Agrawal