How To Reset PRAM on a Mac

Sometimes your Mac's parameter RAM (PRAM) becomes scrambled and needs to be reset. This can cause startup problems for your Mac. This small piece of memory isn’t erased or forgotten when you shut down your Mac.
 

A small amount of your computer’s memory, called “parameter random-access memory” or PRAM, stores certain settings in a location that OS X can access quickly. The particular settings that are stored depend on your type of Mac and the types of devices connected to it. The settings include your designated startup disk, display resolution, speaker volume, and other information.



 


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