Searching external drives

[spinner1000]

I am running Windows 7. I have two external hard drives connected.When I do a search for files etc. it only shows results from one drive.
What should I do to show results from both drives.
Any help appreciated.

[SlackAlice]

Click Start and type 'search' in the search box and press enter. From the choices displayed click on 'change how Windows searches', click modify and put ticks in the HDD boxes and then click ok.

[spinner1000]

Thanks for the reply SlackAlice
The box is ticked for this drive but it still won't come up with any searches.
I can't understand it.