Reindex Spotlight

1. Open Terminal (in /Applications/Utilities/)

2. Type the following:

sudo mdutil -E / to reindex the root volume
sudo mdutil -E /Volumes/volumename to reindex another volume named volumename.

3. Enter your admin password when prompted to do so and press enter.

4. You will receive the message “Volume index removed. Index will be rebuilt automatically.” in the Terminal window. You can monitor the reindexing progress in the Spotlight toolbar drop-down window.

5. Done

Perform System Housekeeping on portable macs

I say on portable mac's because if you have a desktop that never gets shut off, these run automatically.

sudo periodic daily weekly monthly