Can Control Cache On Start Menu Search

Make a new file. c:empdork.txt

Add the single word "ishkabibble" and close the file.

Winkey-F, "dork", enter.

No worky. However, after some period of time, the file will be included in the search results. Or at least I'm pretty sure a file started to come up after a few days.

Now, If one were to have made the same new file in My Documents, insta-worky. That directory is included/indexed/cashed/whatever it's called.

Q: Can I add additional working directories I use often (c: emp, c:music, etc.) such that all nested files within will be included in the Winkey-F search results - instantly (or otherwise.)

Perhaps a "path" type environmental variable exists for search - I would imagine.

("Otherwise" - as in perhaps manually refreshing the cache before a search - which is lame, but serves the purpose.)

[I'm thinking Winkey-F isn't the tool.] Is there a grep type function or tool - that is absolutely categorically going to look at an entire drive for a file, regardless of system, hidden, whatever?

What about text search within a file? Using "ishkabibble" how do I find that file we made?