Scherlokk's answer:

Since Scherlokk is not based upon the Spotlight's index, and has its own, powerful search engine, it will find every single file on any accessible volume in your computer.

Scherlokk's answer:

• Scherlokk searches through 'real' files instead of the Spotlight's index. The index is not always up to date and does not contain all files. • Extremely fast search engine finds your files quicker than competition. • Scherlokk shows search results in a flat or hierarchical view which helps to find out which file is the one you need and how files are located in the folders structure. • Clean and easy to use interface.