1. Right-click on Disks collection in home page of Spotlight
2. Select 'Configure Disk Display' option
3. Uncheck 'Automatically configure disk display' checkbox
4. Set 'Disk to edit' field to 2
5. Select new disk drive that is not displayed in home pate under 'Logical disk to display' drop down
6. Repeat step 4 and 5 and continue to increase Disk to Edit field and add additional disks
7. Hit Ok to close window
