How to run Disk Utility?
I have a imac 13 inch late 2011 model using 10.8.3. About 9 months ago I upgraded to SSD hard drive. Lately, when I start up the laptop, I get the apple screen and spinning gear and gets stuck. Most of the time, I can force quit and start up and again. I ran Disk utility, which is telling my hard drive needs to be repaired and start to restart the laptop and use Disk Utilty. What are the exact procedures to follow? Do I need a start up disk or a disk repair disk?
Thanks
Ted
MacBook Pro, OS X Mountain Lion (10.8.3)