Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it's checking your Mac: Checking your Mac takes 2 or 3 minutes. If any issues are found, Apple Diagnostics suggests solutions and provides reference codes. Note the reference codes before continuing. Choose from these options: To repeat the test, click âRun the test againâ or press Command (â)-R.
Freebase(0.00 / 0 votes)Rate this definition: Peer pressure. Peer pressure is influence that a peer group, observers or individual exerts that encourages others to change their attitudes, values, or behaviors to conform to group norms.
What is water pressure? Pressure is the force that pushes water through pipes. Water pressure determines the flow of water from the tap. The amount of pressure at your tap can depend on how high the service reservoir or water tower is above your home, or on how much water other customers are using. The height of your property can also affect your water pressure â properties at the top of a hill may receive lower pressure than properties which are at the bottom of the hill.