This could be the greatest trick on Apple Laptops which makes no particular sense but even; you should try it! The Death Star, R2D2, spaceships and the rest of the Episode 4 story retold in Terminal symbols and graphics will blow you away! but there is no sound… I wish they rolled the score on the bottom but I think I’m asking too much! :)
Prior macOS Sierra, open up Terminal, type in:
On macOS Sierra and higher macOS versions, you should use a different command:
nc towel.blinkenlights.nl 23
NVRAM (nonvolatile random-access memory), the updated Mac terminology for PRAM (Parameter RAM), is a small amount of memory that your Mac uses to store certain settings and never clear them out to access them quickly.
Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone, and recent kernel panic information.
Method 1: Startup command
If you find that an NVRAM reset might resolve issues, there is more than one way to clean it up. The most common method is by holding down a few keys a second after powering on your Mac:
After pressing the power button, press and hold each of the above-mentioned keys all at once before the first “beep” at the start. When you hear the second “beep”; release the keys.
Method 2: Terminal
Use the Terminal for the same procedure:
- Close all apps and open Terminal (Finder > Utilities > Terminal).
- write sudo nvram -c press Enter.
- Enter the Administrator password press Enter.
- write sudo shutdown -r now and press Enter.
The computer will now restart and that’s it!