I was just curious if a method exists that allows Finder to search a secondary hard drive.

It is often the case, for instance, that I store and will eventually need to search for a bunch of media on 'Macintosh HD 2', not the primary drive. It seems as though Finder's search box, as well as the Spotlight, only allows for searches on the primary drive. If this is the case, can anyone recommend a Finder-like functionality that can search such drives?

The secondary drive in question is using Mac OS Extended (Journaled) formatting, just like the primary drive.