dalchina said:
To be a little more exact:

If you open file explorer at a point above ANY folder containing the file or folder you seek, whether indexed or not, it will find it.. just much more slowly if not indexed.

Simple example: Open a folder not specified to be be indexed- search will still work. Just more slowly.
OK. Thanks. I added the partition as an indexing option, and now it's found. I'll remove it and check it again sometime later. Thanks for the help and info!